About Coordinate System

China National Platform for Common Geospatial Information Services https://www.tianditu.gov.cn/
https://www.tianditu.gov.cn/world_coronavirusmap/
Chinese coordinate systems https://politics.stackexchange.com/questions/40991/why-must-chinese-maps-be-obfuscated
https://zhuanlan.zhihu.com/p/62243160
https://blog.csdn.net/qq_36377037/article/details/86479796
https://www.zhihu.com/question/31204062?sort=created
https://blog.csdn.net/ssxueyi/article/details/102622156
EPSG codes http://epsg.io/4490
http://epsg.io/4479
http://epsg.io/4326
http://epsg.io/3857
Tracking data https://www.microsoft.com/en-us/download/details.aspx?id=52367
https://www.datarepository.movebank.org/discover
https://sumo.dlr.de/docs/Data/Scenarios/TAPASCologne.html
https://blog.csdn.net/souvenir001/article/details/52180335
https://www.cnblogs.com/genghenggao/p/9625511.html
API of TianDiTu http://lbs.tianditu.gov.cn/api/js4.0/guide.html
Data keys of TianDiTu https://console.tianditu.gov.cn/api/key
API of GaoDe map https://lbs.amap.com/api/javascript-api/summary
Data keys of GaoDe map https://console.amap.com/dev/index