Cities I Have Visited Since 2012 (Continuously Updated)
How many trips per year?
Since 2012, up to now, I have been to … cities, and traveled … times (going from city A to city B counts as one trip; if I go back to city A again, that counts as two).
Which cities have I stayed in the longest?
Note: If I enter on January 1 and leave on January 2, it is counted as 2 days, so there is double counting and the total number of days exceeds the number of calendar days.
If we consider all cities except Beijing and Hefei as travel (including business trips), then the total number of travel days accounts for …, in total … days.
Which cities have I visited the most times?
Note: One entry and one exit count as one visit. For example, if I go to another city for a short trip in the morning and come back in the evening, the two separate time periods will be counted as two visits.
How long do I stay on each trip?
The longest stay for a single stretch is 325 days: from February to the end of 2012 I stayed on USTC campus without moving. In the past 10 years, there have only been 6 periods longer than 3 months without moving. The most recent one was a 130-day stay in Beijing (from March 6 to July 13, 2022), second only to the 325 unmoved days in 2012 and the 131 days from February 25 to July 5, 2013. No wonder I felt so suffocated (the average stay length from 2019 to 2021 was 6.0, 12.6, and 8.5 days, far below 130 days).
How many cities do I go to each time I leave Beijing?
You can see that most of the time I go to just one city and then come back, but sometimes I make a big loop before returning.
How long do I stay away from Beijing each time?
My Footprints
2026
| 开始日期 | 结束日期 | 城市 |
|---|---|---|
| 2026-01-06 | 2026-01-11 | 上海 |
| 2026-01-01 | 2026-01-06 | 北京 |
2025
| 开始日期 | 结束日期 | 城市 |
|---|---|---|
| 2025-12-15 | 2025-12-31 | 北京 |
| 2025-12-12 | 2025-12-14 | Palo Alto |
| 2025-12-06 | 2025-12-12 | San Francisco |
| 2025-12-05 | 2025-12-06 | Palo Alto |
| 2025-12-02 | 2025-12-05 | San Diego |
| 2025-11-30 | 2025-12-02 | Las Vegas |
| 2025-11-30 | 2025-11-30 | San Francisco |
| 2025-11-22 | 2025-11-30 | 北京 |
| 2025-11-16 | 2025-11-22 | 上海 |
| 2025-11-13 | 2025-11-16 | 香港 |
| 2025-10-25 | 2025-11-13 | 北京 |
| 2025-10-20 | 2025-10-25 | 上海 |
| 2025-10-09 | 2025-10-20 | 北京 |
| 2025-10-01 | 2025-10-09 | 石家庄 |
| 2025-09-27 | 2025-10-01 | 北京 |
| 2025-09-22 | 2025-09-27 | 上海 |
| 2025-09-06 | 2025-09-22 | 北京 |
| 2025-09-05 | 2025-09-06 | 上海 |
| 2025-09-04 | 2025-09-04 | 深圳 |
| 2025-09-01 | 2025-09-04 | 上海 |
| 2025-08-27 | 2025-09-01 | 北京 |
| 2025-08-25 | 2025-08-27 | 三亚 |
| 2025-08-23 | 2025-08-25 | 陵水 |
| 2025-08-22 | 2025-08-23 | 海口 |
| 2025-08-22 | 2025-08-22 | 文昌 |
| 2025-08-22 | 2025-08-22 | 海口 |
| 2025-08-09 | 2025-08-22 | 北京 |
| 2025-08-05 | 2025-08-09 | 上海 |
| 2025-07-19 | 2025-08-05 | 北京 |
| 2025-07-14 | 2025-07-19 | 上海 |
| 2025-06-20 | 2025-07-14 | 北京 |
| 2025-06-15 | 2025-06-20 | 上海 |
| 2025-06-02 | 2025-06-15 | 北京 |
| 2025-06-01 | 2025-06-02 | 延庆 |
| 2025-05-24 | 2025-06-01 | 北京 |
| 2025-05-19 | 2025-05-24 | 上海 |
| 2025-05-05 | 2025-05-19 | 北京 |
| 2025-05-02 | 2025-05-05 | 太原 |
| 2025-05-02 | 2025-05-02 | 岚县 |
| 2025-05-01 | 2025-05-02 | 太原 |
| 2025-04-19 | 2025-04-30 | 北京 |
| 2025-04-14 | 2025-04-19 | 上海 |
| 2025-03-22 | 2025-04-14 | 北京 |
| 2025-03-17 | 2025-03-22 | 上海 |
| 2025-03-02 | 2025-03-17 | 北京 |
| 2025-03-01 | 2025-03-02 | 北戴河 |
| 2025-03-01 | 2025-03-01 | 山海关 |
| 2025-02-22 | 2025-03-01 | 北京 |
| 2025-02-17 | 2025-02-22 | 上海 |
| 2025-02-10 | 2025-02-17 | 北京 |
| 2025-02-08 | 2025-02-10 | 湖州 |
| 2025-01-15 | 2025-02-08 | 北京 |
| 2025-01-12 | 2025-01-15 | 石家庄 |
| 2025-01-01 | 2025-01-12 | 北京 |
2024
| 开始日期 | 结束日期 | 城市 |
|---|---|---|
| 2024-10-08 | 2024-12-31 | 北京 |
| 2024-10-06 | 2024-10-08 | 杭州 |
| 2024-10-06 | 2024-10-06 | 太原 |
| 2024-10-04 | 2024-10-06 | 岚县 |
| 2024-10-03 | 2024-10-04 | 太原 |
| 2024-09-30 | 2024-10-03 | 石家庄 |
| 2024-09-25 | 2024-09-30 | 北京 |
| 2024-04-24 | 2024-09-25 | 合肥 |
| 2024-09-22 | 2024-09-24 | 北京 |
| 2024-09-19 | 2024-09-22 | 杭州 |
| 2024-09-15 | 2024-09-19 | 西安 |
| 2024-08-18 | 2024-09-14 | 北京 |
| 2024-08-18 | 2024-08-18 | 长沙 |
| 2024-08-17 | 2024-08-18 | 吉隆坡 |
| 2024-08-14 | 2024-08-17 | 新加坡 |
| 2024-08-13 | 2024-08-14 | 马六甲 |
| 2024-08-10 | 2024-08-12 | 吉隆坡 |
| 2024-08-10 | 2024-08-10 | 深圳 |
| 2024-07-21 | 2024-08-10 | 北京 |
| 2024-07-20 | 2024-07-21 | 岚县 |
| 2024-07-19 | 2024-07-20 | 太原 |
| 2024-07-07 | 2024-07-19 | 北京 |
| 2024-07-05 | 2024-07-07 | 合肥 |
| 2024-06-10 | 2024-07-05 | 北京 |
| 2024-06-09 | 2024-06-10 | 太原 |
| 2024-06-08 | 2024-06-09 | 岚县 |
| 2024-06-07 | 2024-06-08 | 太原 |
| 2024-06-01 | 2024-06-07 | 北京 |
| 2024-06-01 | 2024-06-01 | 密云 |
| 2024-06-01 | 2024-06-01 | 怀柔 |
| 2024-05-06 | 2024-06-01 | 北京 |
| 2024-05-04 | 2024-05-06 | 太原 |
| 2024-05-03 | 2024-05-04 | 古交 |
| 2024-05-03 | 2024-05-03 | 太原 |
| 2024-05-02 | 2024-05-03 | 大同 |
| 2024-05-02 | 2024-05-02 | 应县 |
| 2024-05-01 | 2024-05-02 | 大同 |
| 2024-04-21 | 2024-05-01 | 北京 |
| 2024-04-16 | 2024-04-21 | 迪拜 |
| 2024-04-06 | 2024-04-16 | 北京 |
| 2024-04-04 | 2024-04-06 | 武汉 |
| 2024-03-29 | 2024-04-04 | 北京 |
| 2024-03-28 | 2024-03-28 | San Francisco |
| 2024-03-17 | 2024-03-28 | 洛杉矶 |
| 2024-02-22 | 2024-03-17 | 北京 |
| 2024-02-22 | 2024-02-22 | 香港 |
| 2024-02-19 | 2024-02-22 | 新加坡 |
| 2024-02-19 | 2024-02-19 | 厦门 |
| 2024-02-18 | 2024-02-19 | 北京 |
| 2024-02-16 | 2024-02-18 | 太原 |
| 2024-02-15 | 2024-02-16 | 岚县 |
| 2024-02-13 | 2024-02-15 | 太原 |
| 2024-02-13 | 2024-02-13 | 古交 |
| 2024-02-12 | 2024-02-13 | 太原 |
| 2024-02-08 | 2024-02-12 | 石家庄 |
| 2024-01-01 | 2024-02-08 | 北京 |
2023
| Start Date | End Date | City |
|---|---|---|
| 2023-11-21 | 2023-12-31 | Beijing |
| 2023-11-21 | 2023-11-21 | Hong Kong |
| 2023-11-18 | 2023-11-19 | Los Angeles |
| 2023-11-14 | 2023-11-18 | San Mateo |
| 2023-11-14 | 2023-11-14 | Stanford |
| 2023-11-14 | 2023-11-14 | San Francisco |
| 2023-11-13 | 2023-11-14 | San Mateo |
| 2023-11-13 | 2023-11-13 | Berkeley |
| 2023-11-12 | 2023-11-13 | San Mateo |
| 2023-11-12 | 2023-11-12 | Stanford |
| 2023-11-11 | 2023-11-12 | Los Angeles |
| 2023-11-11 | 2023-11-11 | Joshua Tree |
| 2023-11-06 | 2023-11-11 | Los Angeles |
| 2023-11-06 | 2023-11-06 | Irvine |
| 2023-10-05 | 2023-11-06 | Los Angeles |
| 2023-11-05 | 2023-11-05 | Irvine |
| 2023-10-22 | 2023-11-05 | Los Angeles |
| 2023-10-22 | 2023-10-22 | Irvine |
| 2023-10-13 | 2023-10-22 | Los Angeles |
| 2023-10-13 | 2023-10-13 | San Diego |
| 2023-10-12 | 2023-10-13 | Los Angeles |
| 2023-10-11 | 2023-10-12 | San Diego |
| 2023-10-01 | 2023-10-11 | Los Angeles |
| 2023-10-01 | 2023-10-01 | Irvine |
| 2023-09-29 | 2023-10-01 | Los Angeles |
| 2023-09-28 | 2023-09-29 | San Mateo |
| 2023-09-28 | 2023-09-28 | Stanford |
| 2023-09-27 | 2023-09-28 | San Mateo |
| 2023-09-27 | 2023-09-27 | Mountain View |
| 2023-09-26 | 2023-09-27 | San Mateo |
| 2023-09-25 | 2023-09-26 | Los Angeles |
| 2023-09-25 | 2023-09-25 | Newport Beach |
| 2023-08-25 | 2023-09-25 | Los Angeles |
| 2023-08-25 | 2023-08-25 | Hong Kong |
| 2023-08-24 | 2023-08-25 | Xiamen |
| 2023-07-14 | 2023-08-24 | Beijing |
| 2023-07-10 | 2023-07-14 | Shenzhen |
| 2023-07-02 | 2023-07-10 | Beijing |
| 2023-06-28 | 2023-07-02 | Hong Kong |
| 2023-06-18 | 2023-06-28 | Beijing |
| 2023-06-15 | 2023-06-18 | Hangzhou |
| 2023-05-28 | 2023-06-15 | Beijing |
| 2023-05-27 | 2023-05-28 | Xi’an |
| 2023-05-25 | 2023-05-27 | Hangzhou |
| 2023-05-25 | 2023-05-25 | Dongguan |
| 2023-05-23 | 2023-05-25 | Shenzhen |
| 2023-05-21 | 2023-05-23 | Shanghai |
| 2023-05-21 | 2023-05-21 | Hangzhou |
| 2023-05-20 | 2023-05-21 | Shijiazhuang |
| 2023-05-14 | 2023-05-20 | Beijing |
| 2023-05-13 | 2023-05-14 | Urumqi |
| 2023-05-13 | 2023-05-13 | Jinghe |
| 2023-05-12 | 2023-05-12 | Ku’erdning |
| 2023-05-11 | 2023-05-12 | Nalati |
| 2023-05-10 | 2023-05-11 | Yining |
| 2023-05-10 | 2023-05-10 | Sayram Lake |
| 2023-05-09 | 2023-05-10 | Karamay |
| 2023-05-09 | 2023-05-09 | Ghost City |
| 2023-05-08 | 2023-05-09 | Hemu |
| 2023-05-07 | 2023-05-08 | Kanas |
| 2023-05-06 | 2023-05-07 | Buerjin |
| 2023-05-06 | 2023-05-06 | Colorful Beach |
| 2023-05-06 | 2023-05-06 | Ulungur Lake |
| 2023-05-05 | 2023-05-06 | Urumqi |
| 2023-05-05 | 2023-05-05 | Tianshan Tianchi |
| 2023-05-04 | 2023-05-05 | Urumqi |
| 2023-05-03 | 2023-05-04 | Taiyuan |
| 2023-05-02 | 2023-05-03 | Gujiao |
| 2023-04-29 | 2023-05-02 | Shijiazhuang |
| 2023-04-16 | 2023-04-29 | Beijing |
| 2023-04-14 | 2023-04-16 | Shijiazhuang |
| 2023-04-12 | 2023-04-14 | Hangzhou |
| 2023-04-09 | 2023-04-12 | Beijing |
| 2023-04-07 | 2023-04-09 | Changsha |
| 2023-03-01 | 2023-04-07 | Beijing |
| 2023-02-27 | 2023-03-01 | Nanjing |
| 2023-02-19 | 2023-02-27 | Shenzhen |
| 2023-02-11 | 2023-02-19 | Beijing |
| 2023-02-08 | 2023-02-11 | Shenzhen |
| 2023-02-03 | 2023-02-08 | Beijing |
| 2023-01-28 | 2023-02-03 | Hangzhou |
| 2023-01-27 | 2023-01-28 | Beijing |
| 2023-01-23 | 2023-01-27 | Shijiazhuang |
| 2023-01-22 | 2023-01-23 | Taiyuan |
| 2023-01-21 | 2023-01-22 | Gujiao |
| 2023-01-20 | 2023-01-21 | Taiyuan |
| 2023-01-02 | 2023-01-20 | Beijing |
| 2023-01-01 | 2023-01-02 | Tianjin |
2022
| Start Date | End Date | City |
|---|---|---|
| 2022-12-31 | 2022-12-31 | Tianjin |
| 2022-11-19 | 2022-12-31 | Beijing |
| 2022-11-16 | 2022-11-19 | Shanghai |
| 2022-11-12 | 2022-11-16 | Hangzhou |
| 2022-11-10 | 2022-11-12 | Beijing |
| 2022-11-08 | 2022-11-10 | Chengdu |
| 2022-10-29 | 2022-11-08 | Beijing |
| 2022-10-23 | 2022-10-29 | Hangzhou |
| 2022-10-22 | 2022-10-23 | Zhoushan |
| 2022-10-21 | 2022-10-22 | Hangzhou |
| 2022-10-19 | 2022-10-21 | Shenzhen |
| 2022-10-01 | 2022-10-19 | Beijing |
| 2022-09-24 | 2022-10-01 | Hangzhou |
| 2022-08-12 | 2022-09-24 | Beijing |
| 2022-08-10 | 2022-08-12 | Hangzhou |
| 2022-08-03 | 2022-08-10 | Beijing |
| 2022-07-29 | 2022-08-03 | Hangzhou |
| 2022-07-16 | 2022-07-29 | Beijing |
| 2022-07-13 | 2022-07-16 | Chengdu |
| 2022-03-06 | 2022-07-13 | Beijing |
| 2022-03-04 | 2022-03-06 | Hefei |
| 2022-02-27 | 2022-03-04 | Hangzhou |
| 2022-02-27 | 2022-02-27 | Deqing |
| 2022-02-22 | 2022-02-27 | Hangzhou |
| 2022-02-12 | 2022-02-22 | Beijing |
| 2022-01-27 | 2022-02-12 | Shijiazhuang |
| 2022-01-21 | 2022-01-27 | Hangzhou |
| 2022-01-16 | 2022-01-21 | Shanghai |
| 2022-01-10 | 2022-01-16 | Hangzhou |
| 2022-01-03 | 2022-01-10 | Beijing |
| 2022-01-01 | 2022-01-03 | Suzhou |
| 2022-01-01 | 2022-01-01 | Beijing |
2021
| Start Date | End Date | City |
|---|---|---|
| 2021-12-05 | 2021-12-31 | Beijing |
| 2021-12-03 | 2021-12-05 | Hefei |
| 2021-11-22 | 2021-12-03 | Shenzhen |
| 2021-10-24 | 2021-11-22 | Beijing |
| 2021-10-22 | 2021-10-24 | Shenzhen |
| 2021-10-17 | 2021-10-22 | Hangzhou |
| 2021-10-14 | 2021-10-17 | Shenzhen |
| 2021-10-08 | 2021-10-14 | Beijing |
| 2021-10-07 | 2021-10-08 | Kunming |
| 2021-10-05 | 2021-10-07 | Lijiang |
| 2021-10-04 | 2021-10-05 | Shangri-La |
| 2021-10-03 | 2021-10-04 | Lijiang |
| 2021-10-03 | 2021-10-03 | Lugu Lake |
| 2021-10-02 | 2021-10-03 | Lijiang |
| 2021-10-02 | 2021-10-02 | Luzhou |
| 2021-10-02 | 2021-10-02 | Nanchang |
| 2021-10-01 | 2021-10-02 | Taiyuan |
| 2021-09-30 | 2021-10-01 | Guxian |
| 2021-09-12 | 2021-09-30 | Beijing |
| 2021-09-02 | 2021-09-12 | Hangzhou |
| 2021-08-01 | 2021-09-02 | Beijing |
| 2021-07-30 | 2021-08-01 | Hefei |
| 2021-07-25 | 2021-07-30 | Hangzhou |
| 2021-07-23 | 2021-07-25 | Hefei |
| 2021-07-20 | 2021-07-23 | Hangzhou |
| 2021-07-14 | 2021-07-20 | Beijing |
| 2021-07-04 | 2021-07-14 | Chengdu |
| 2021-06-04 | 2021-07-04 | Beijing |
| 2021-05-29 | 2021-06-04 | Xi’an |
| 2021-05-13 | 2021-05-29 | Beijing |
| 2021-05-12 | 2021-05-13 | Shijiazhuang |
| 2021-05-05 | 2021-05-12 | Beijing |
| 2021-04-30 | 2021-05-05 | Shijiazhuang |
| 2021-04-08 | 2021-04-30 | Beijing |
| 2021-04-05 | 2021-04-08 | Shanghai |
| 2021-04-02 | 2021-04-05 | Suzhou |
| 2021-03-31 | 2021-04-02 | Xi’an |
| 2021-03-05 | 2021-03-31 | Beijing |
| 2021-03-02 | 2021-03-05 | Chengdu |
| 2021-02-15 | 2021-03-02 | Beijing |
| 2021-02-14 | 2021-02-15 | Guxian |
| 2021-01-10 | 2021-02-13 | Beijing |
| 2021-01-08 | 2021-01-10 | Shenzhen |
| 2021-01-03 | 2021-01-08 | Beijing |
| 2021-01-01 | 2021-01-03 | Tianjin |
| 2021-01-01 | 2021-01-01 | Beijing |
2020
| Start Date | End Date | City |
|---|---|---|
| 2020-11-29 | 2020-12-31 | Beijing |
| 2020-11-28 | 2020-11-29 | Shenzhen |
| 2020-11-08 | 2020-11-28 | Beijing |
| 2020-11-06 | 2020-11-08 | Dongguan |
| 2020-11-04 | 2020-11-06 | Shanghai |
| 2020-10-25 | 2020-11-04 | Chengdu |
| 2020-10-18 | 2020-10-25 | Beijing |
| 2020-10-17 | 2020-10-18 | Xi’an |
| 2020-10-08 | 2020-10-17 | Beijing |
| 2020-10-07 | 2020-10-08 | Hefei |
| 2020-10-05 | 2020-10-07 | Chizhou |
| 2020-10-01 | 2020-10-05 | Hefei |
| 2020-08-28 | 2020-10-01 | Beijing |
| 2020-08-19 | 2020-08-28 | Chengdu |
| 2020-08-16 | 2020-08-19 | Beijing |
| 2020-08-14 | 2020-08-16 | Shenzhen |
| 2020-08-09 | 2020-08-14 | Beijing |
| 2020-08-01 | 2020-08-09 | Shanghai |
| 2020-05-17 | 2020-08-01 | Beijing |
| 2020-05-03 | 2020-05-17 | Hangzhou |
| 2020-05-02 | 2020-05-03 | Beijing |
| 2020-03-29 | 2020-05-02 | Hangzhou |
| 2020-03-29 | 2020-03-29 | Beijing |
| 2020-03-25 | 2020-03-29 | Shijiazhuang |
| 2020-02-01 | 2020-03-25 | Beijing |
| 2020-01-23 | 2020-02-01 | Shijiazhuang |
| 2020-01-18 | 2020-01-23 | Beijing |
| 2020-01-13 | 2020-01-18 | Hangzhou |
| 2020-01-01 | 2020-01-13 | Beijing |
| 2020-01-01 | 2020-01-01 | Hefei |
2019
| Start Date | End Date | City |
|---|---|---|
| 2019-12-31 | 2019-12-31 | Hefei |
| 2019-12-21 | 2019-12-31 | Hangzhou |
| 2019-12-20 | 2019-12-21 | Zhuhai |
| 2019-12-08 | 2019-12-20 | Hangzhou |
| 2019-12-04 | 2019-12-08 | Beijing |
| 2019-12-04 | 2019-12-04 | Tianjin |
| 2019-12-01 | 2019-12-04 | Beijing |
| 2019-11-03 | 2019-12-01 | Hangzhou |
| 2019-10-30 | 2019-11-03 | Beijing |
| 2019-10-21 | 2019-10-30 | Hangzhou |
| 2019-10-19 | 2019-10-21 | Beijing |
| 2019-10-06 | 2019-10-19 | Hangzhou |
| 2019-10-05 | 2019-10-06 | Beijing |
| 2019-10-01 | 2019-10-05 | Shijiazhuang |
| 2019-09-20 | 2019-10-01 | Hangzhou |
| 2019-09-20 | 2019-09-20 | Shanghai |
| 2019-09-16 | 2019-09-20 | Hangzhou |
| 2019-09-16 | 2019-09-16 | Beijing |
| 2019-09-13 | 2019-09-16 | Shijiazhuang |
| 2019-09-13 | 2019-09-13 | Beijing |
| 2019-09-08 | 2019-09-13 | Hangzhou |
| 2019-09-04 | 2019-09-08 | Beijing |
| 2019-09-01 | 2019-09-04 | Hangzhou |
| 2019-07-31 | 2019-09-01 | Beijing |
| 2019-07-22 | 2019-07-31 | Hangzhou |
| 2019-07-14 | 2019-07-22 | Beijing |
| 2019-07-12 | 2019-07-14 | Hefei |
| 2019-07-11 | 2019-07-12 | Hangzhou |
| 2019-07-09 | 2019-07-10 | Shenzhen |
| 2019-07-07 | 2019-07-08 | Beijing |
| 2019-06-25 | 2019-07-07 | Hangzhou |
| 2019-06-23 | 2019-06-25 | Beijing |
| 2019-06-21 | 2019-06-22 | Hefei |
| 2019-06-16 | 2019-06-20 | Beijing |
| 2019-06-15 | 2019-06-15 | Shenzhen |
| 2019-06-09 | 2019-06-15 | Dongguan |
| 2019-05-29 | 2019-06-09 | Beijing |
| 2019-05-25 | 2019-05-29 | Hefei |
| 2019-05-09 | 2019-05-24 | Beijing |
| 2019-05-07 | 2019-05-09 | Tokyo, Japan |
| 2019-05-06 | 2019-05-07 | Hakodate, Japan |
| 2019-05-05 | 2019-05-06 | Noboribetsu, Japan |
| 2019-05-05 | 2019-05-05 | Toya, Japan |
| 2019-05-04 | 2019-05-05 | Sapporo, Japan |
| 2019-05-04 | 2019-05-04 | Otaru, Japan |
| 2019-05-03 | 2019-05-04 | Sapporo, Japan |
| 2019-05-02 | 2019-05-03 | Osaka, Japan |
| 2019-05-01 | 2019-05-02 | Kyoto, Japan |
| 2019-04-30 | 2019-05-01 | Osaka, Japan |
| 2019-04-29 | 2019-04-30 | Nagano, Japan |
| 2019-04-28 | 2019-04-29 | Lake Kawaguchi, Japan |
| 2019-04-27 | 2019-04-28 | Hakone, Japan |
| 2019-04-25 | 2019-04-27 | Tokyo, Japan |
| 2019-04-17 | 2019-04-25 | Beijing |
| 2019-04-16 | 2019-04-17 | Hefei |
| 2019-04-14 | 2019-04-15 | Beijing |
| 2019-04-13 | 2019-04-14 | Shijiazhuang |
| 2019-02-21 | 2019-04-13 | Beijing |
| 2019-02-19 | 2019-02-21 | Hefei |
| 2019-02-11 | 2019-02-18 | Beijing |
| 2019-02-04 | 2019-02-11 | Shijiazhuang |
| 2019-01-30 | 2019-02-04 | Guxian |
| 2019-01-01 | 2019-01-30 | Beijing |
| 2019-01-01 | 2019-01-01 | Hefei |
2018
| Start Date | End Date | City |
|---|---|---|
| 2018-12-29 | 2018-12-31 | Hefei |
| 2018-11-28 | 2018-12-28 | Beijing |
| 2018-11-25 | 2018-11-27 | Hefei |
| 2018-10-30 | 2018-11-25 | Beijing |
| 2018-10-27 | 2018-10-29 | Hefei |
| 2018-10-08 | 2018-10-26 | Beijing |
| 2018-10-06 | 2018-10-08 | Hefei |
| 2018-10-05 | 2018-10-06 | Wuxi |
| 2018-10-02 | 2018-10-05 | Suzhou |
| 2018-09-25 | 2018-10-02 | Beijing |
| 2018-09-21 | 2018-09-25 | Shijiazhuang |
| 2018-09-05 | 2018-09-21 | Beijing |
| 2018-09-02 | 2018-09-05 | Hangzhou |
| 2018-06-20 | 2018-09-02 | Beijing |
| 2018-06-15 | 2018-06-20 | Hefei |
| 2018-03-05 | 2018-06-15 | Beijing |
| 2018-03-03 | 2018-03-05 | Hefei |
| 2018-02-21 | 2018-03-02 | Beijing |
| 2018-02-14 | 2018-02-21 | Shijiazhuang |
| 2018-02-14 | 2018-02-14 | Taiyuan |
| 2018-02-11 | 2018-02-14 | Pingyao |
| 2018-02-11 | 2018-02-11 | Jiexiu |
| 2018-02-10 | 2018-02-11 | Taiyuan |
| 2018-01-11 | 2018-02-10 | Beijing |
| 2018-01-09 | 2018-01-10 | Hefei |
| 2018-01-01 | 2018-01-09 | Beijing |
2017
| Start Date | End Date | City |
|---|---|---|
| 2017-12-18 | 2017-12-31 | Beijing |
| 2017-12-17 | 2017-12-18 | Hefei |
| 2017-12-17 | 2017-12-17 | Beijing |
| 2017-12-10 | 2017-12-16 | USA Seattle/Redmond |
| 2017-11-03 | 2017-12-10 | Beijing |
| 2017-11-01 | 2017-11-03 | Hefei |
| 2017-10-28 | 2017-11-01 | Shanghai |
| 2017-10-20 | 2017-10-28 | Beijing |
| 2017-10-18 | 2017-10-20 | Harbin |
| 2017-10-05 | 2017-10-18 | Beijing |
| 2017-10-02 | 2017-10-05 | Shijiazhuang |
| 2017-08-06 | 2017-10-02 | Beijing |
| 2017-08-02 | 2017-08-06 | Hong Kong |
| 2017-07-22 | 2017-08-02 | Beijing |
| 2017-07-19 | 2017-07-22 | Nanjing |
| 2017-07-14 | 2017-07-19 | Beijing |
| 2017-07-13 | 2017-07-14 | Hefei |
| 2017-06-04 | 2017-07-13 | Beijing |
| 2017-06-04 | 2017-06-04 | Tianjin |
| 2017-06-01 | 2017-06-04 | Beijing |
| 2017-05-30 | 2017-06-01 | Hefei |
| 2017-05-02 | 2017-05-30 | Beijing |
| 2017-04-29 | 2017-05-02 | Shijiazhuang |
| 2017-02-05 | 2017-04-29 | Beijing |
| 2017-01-31 | 2017-02-05 | Harbin |
| 2017-01-26 | 2017-01-31 | Shijiazhuang |
| 2017-01-01 | 2017-01-26 | Beijing |
2016
| Start Date | End Date | City |
|---|---|---|
| 2016-10-06 | 2016-12-31 | Beijing |
| 2016-10-02 | 2016-10-06 | Shijiazhuang |
| 2016-09-25 | 2016-10-02 | Beijing |
| 2016-09-24 | 2016-09-25 | Shijiazhuang |
| 2016-09-06 | 2016-09-24 | Beijing |
| 2016-09-01 | 2016-09-06 | Hefei |
| 2016-08-29 | 2016-09-01 | Beijing |
| 2016-08-28 | 2016-08-28 | Paris, France |
| 2016-08-21 | 2016-08-27 | Florianopolis, Brazil |
| 2016-08-20 | 2016-08-20 | Paris, France |
| 2016-07-16 | 2016-08-20 | Beijing |
| 2016-07-16 | 2016-07-16 | Hefei |
| 2016-05-17 | 2016-07-15 | Beijing |
| 2016-05-13 | 2016-05-16 | Hefei |
| 2016-05-03 | 2016-05-12 | Beijing |
| 2016-04-30 | 2016-05-03 | Shijiazhuang |
| 2016-02-16 | 2016-04-30 | Beijing |
| 2016-02-12 | 2016-02-15 | Hefei |
| 2016-02-06 | 2016-02-12 | Shijiazhuang |
| 2016-02-05 | 2016-02-06 | Beijing |
| 2016-01-31 | 2016-02-05 | Hefei |
| 2016-01-04 | 2016-01-31 | Beijing |
| 2016-01-01 | 2016-01-03 | Hefei |
2015
| Start Date | End Date | City |
|---|---|---|
| 2015-12-30 | 2015-12-31 | Hefei |
| 2015-11-02 | 2015-12-30 | Beijing |
| 2015-10-30 | 2015-11-01 | Hefei |
| 2015-10-05 | 2015-10-30 | Beijing |
| 2015-09-30 | 2015-10-05 | Shijiazhuang |
| 2015-09-27 | 2015-09-29 | Hefei |
| 2015-07-20 | 2015-09-27 | Beijing |
| 2015-07-14 | 2015-07-20 | Ningde |
| 2015-04-05 | 2015-07-14 | Hefei |
| 2015-04-03 | 2015-04-05 | Nanjing |
| 2015-02-07 | 2015-04-03 | Hefei |
| 2015-02-06 | 2015-02-06 | Beijing |
| 2015-01-31 | 2015-02-05 | Hefei |
| 2015-01-28 | 2015-01-31 | Huangshan |
| 2015-01-01 | 2015-01-28 | Hefei |
2014
| Start Date | End Date | City |
|---|---|---|
| 2014-09-19 | 2014-12-31 | Hefei |
| 2014-09-05 | 2014-09-19 | Beijing |
| 2014-09-02 | 2014-09-04 | Hefei |
| 2014-08-07 | 2014-09-01 | Beijing |
| 2014-07-26 | 2014-08-07 | Shijiazhuang |
| 2014-07-02 | 2014-07-26 | Beijing |
| 2014-06-16 | 2014-07-02 | Hefei |
| 2014-06-15 | 2014-06-16 | Suzhou |
| 2014-05-31 | 2014-06-15 | Hefei |
| 2014-05-04 | 2014-05-31 | Beijing |
| 2014-04-30 | 2014-05-04 | Shijiazhuang |
| 2014-02-10 | 2014-04-30 | Beijing |
| 2014-01-30 | 2014-02-10 | Shijiazhuang |
| 2014-01-01 | 2014-01-30 | Beijing |
2013
| Start Date | End Date | City |
|---|---|---|
| 2013-11-12 | 2013-12-31 | Beijing |
| 2013-11-09 | 2013-11-11 | Hefei |
| 2013-10-10 | 2013-11-08 | Beijing |
| 2013-10-08 | 2013-10-10 | Hefei |
| 2013-10-02 | 2013-10-07 | Shijiazhuang |
| 2013-09-22 | 2013-10-02 | Beijing |
| 2013-09-01 | 2013-09-22 | Hefei |
| 2013-07-08 | 2013-09-01 | Beijing |
| 2013-07-06 | 2013-07-08 | Shijiazhuang |
| 2013-02-25 | 2013-07-05 | Hefei |
| 2013-01-01 | 2013-02-24 | Shijiazhuang |
2012
| Start Date | End Date | City |
|---|---|---|
| 2012-02-11 | 2012-12-31 | Hefei |
| 2012-01-25 | 2012-02-11 | Beijing |
| 2012-01-15 | 2012-01-25 | Shijiazhuang |
| 2012-01-01 | 2012-01-14 | Hefei |
Notes when this post was first published in July 2022
Let me update and preview the cities I have (or will have) traveled to here!
(July 22, 2022) Due to the pandemic, I haven’t moved for 4 months, missed a wedding during the Labor Day holiday, and missed getting our marriage certificate together on 5/20. We also haven’t seen each other for 4 months.
Now everywhere you go requires a travel history card for the last 14 days; I can provide my travel history for the last 10 years! Following the same logic as the travel history card, short stopovers in a place don’t count, but transfers by air/train generally do. Since December 13, 2022, the travel history card has exited the stage of history.
From 2012 to July 2022, I visited a total of 42 cities and traveled 259 times (a trip from city A to city B counts as once, and if I return to city A that counts as twice). In 2019 alone, I even traveled 63 times. When I got these statistics, I was quite shocked. Although I had a lot of business trips in the last 3 years, and in 2019 I visited 12 cities in Japan, I still didn’t expect the number to be that high. Why so many business trips? The main site of my first project was in Hangzhou, so from June 2019 to May 2020 I spent most of my time there. For my current project I am leading three teams in Hangzhou, Shanghai, and Israel, with the only exception being Beijing; and as an architect I also often need to attend workshops. Perhaps God thinks I’m especially suited to long-distance relationships.
During my joint PhD training between USTC and Microsoft Research Asia (from my senior-year internship in 2013 to PhD graduation in 2019), I had to travel frequently between Hefei and Beijing; among students that should already count as a lot. I didn’t expect that after starting work, I would travel even more for business; according to Umetrip, in 2021 I flew more than 97% of users. Those 3% who flew more than me must be real frequent flyers. I do regret that I was too stingy during my PhD, often reluctant to spend money on tickets, and so I didn’t see my girlfriend very often. Another small regret is that I was often too lazy to write trip summaries after traveling. My memory is bad, and after a long time I can only rely on photos and chat logs to recall things.
As of November 2023, I have visited 71 cities and traveled 380 times, an increase of 29 cities compared with a year earlier, mainly from our honeymoon trip to Xinjiang after our wedding and my three-month trip to the United States. In fact, “city” is somewhat hard to define. In the U.S., it might be more reasonable to map “city” to “county”. If I were to record every trip that crossed county lines, then the number of “trips” in the U.S. would increase a lot (some of those within the Bay Area and between Los Angeles and Irvine shouldn’t really count as travel), and I probably wouldn’t be able to remember them all.
Statistics chart as of May 2022
Of course, I don’t have permission to obtain base-station connection data from telecom operators. The travel data comes from ticket booking records, business trip records, etc., and since some tickets weren’t booked by me personally, some trips may have been missed. For example, the date of my trip back to Hefei after finishing my internship at MSRA in June 2014 and returning for my undergraduate graduation can no longer be verified. Based on the internship certificate stating July 9, 2013 to May 30, 2014, the date from Beijing to Hefei has now been confirmed.
If you find any errors, feel free to contact me for corrections.
Postscript
My mom’s comment after reading this article:
Life is like a journey: you travel over thousands of mountains and rivers, experiencing all kinds of storms. In every stretch of scenery there are beautiful memories; in every storm there is a positive response. What is most worth cherishing is that, on this journey, you met a like-minded partner to admire the scenery along the way together. You will surely share both joy and hardship, stand side by side through wind and rain, travel through thousands of mountains and rivers, tread across wild hills and forests, reach the peak of happiness, and together watch the clouds roll and unfold, the sunrise and sunset, and share a brilliant life.