Sharing tricky to access data if anyone is interested.
This is the Township-level boundaries (乡 - Admin Level 4) for all of China (not Taiwan or HK). 43,655 in total. The finest-scale data I could find before this dataset was counties (2,851).

Link here: https://t.co/RT1NbbltfU pic.twitter.com/kw4G6GpctZ

— Nathan Ruser (@Nrg8000) November 14, 2019