The name of Douyin can be changed.

Douyin is a popular short video social application. Users can freely modify their usernames and nicknames according to their personal preferences and needs. To modify your username and nickname, first open the Douyin APP and enter your personal homepage. Then click the three dots in the upper right corner and select "Edit Profile" to enter the editing page. On the edit profile page, you can find the "Name" or "Nickname" option. After clicking the appropriate option, you can enter a new username or nickname. Before entering a new name, you need to ensure that the new name complies with Douyin's community rules and does not contain violence, pornography, vulgarity, etc. Finally, when you're done making changes, click the "Save" button to apply your new username or nickname.