It is possible to set the same username for Douyin and WeChat, but it is not necessary. This approach is mainly to facilitate users’ memory and unify and integrate social media accounts, but it may pose a certain degree of threat to users’ personal privacy and security.

Because when users post content on Douyin, it may be seen by WeChat friends, which will lead to dissemination and interaction among WeChat friends. At the same time, WeChat may also obtain users’ private information, such as mobile phone numbers, WeChat IDs, etc., without their knowledge.

To sum up, it is not absolutely good or bad to set the Douyin and WeChat screen names to be the same, it depends on personal needs and privacy concepts. In order to protect personal privacy and security, it is recommended that users carefully consider when setting up social media accounts and try to avoid setting the same names on multiple social media accounts.