To help SMEs recover, Douyin is free again Certified enterprise number, each enterprise profile can be certified with 2 vibrato numbers, valid for one year, and annual review is required after expiration.
Computer access: https://renzheng.douyin.com/guide
Mobile access: https://renzheng.douyin.com/api/douyin/ (copy to shake App sent to friends from the link to enter)
Activity time: 2020.5.17 deadline