1. There are uncommon words in your name, so the computer can't type them out;
2. If a couple takes care of their children after divorce, they need to change their names;
3. The name of the applicant is homophonic and ambiguous to read;
4. The name of the applicant and the same name among the ancestors;
5. There are duplicate names in the same unit or class;
6. Monks and nuns need usage numbers instead of common names;
7. There are special circumstances.