It's okay. Mistakes can be corrected. The process is more troublesome. Ask at the school where the exam is held, and fill out the application form at the Education Bureau. Enter the consulting counter at the gate of the Education Bureau, indicating that you want to modify the application information, and he will guide you. However, this is a life event after all, so we must fill it out carefully to avoid future troubles. I hope everyone will fill it out carefully. It's really not good. You can write in pencil first, and you can be sure.