Use an account without real-name verification, go to Douyin and buy a phone (you don't really buy it); it will ask for real-name verification - log in with the banned account to verify, then casually tap deactivate, and the ID card is released.

Shared free; the method is written above - do not tap the buy button below.
This course comes with a materials pack. Members receive the access link by email after requesting the course.