1 How to get the administrative division shp files on the osm (review)
https://www.jianshu.com/p/03a9204e2380
https://zhuanlan.zhihu.com/p/74047925
2 Select the city, download json
http://datav.aliyun.com/tools/atlas/#&lat=33.521903996156105&lng=104.29849999999999&zoom=4
3 can bulk import json, into shp, pay attention to the need to re-associate the name is garbled reference to the link description 1
https://mapshaper.org/
4 osm- export border
https://wambachers-osm.website/boundaries/