1. Must start with a letter. 2. 4-16 characters.
2. Can use: uppercase and lowercase letters, numbers, - and _ symbols.
3. If the name is not working, it must be a duplicate name. It is recommended to try another name. The system will keep prompting for duplicate names.
4. English recommendations: cute (cute), Britney (twilight), bigotry (paranoid), Fiee (pursuit).
5. Chinese recommendations: fish through the net, flowers on the eyebrows, hoarse painting, deer at the end of the bed, world offering, and arrogant steps.