1. Pinyin of surname and first name are separated by spaces, and the first letters are capitalized respectively.

2. If you have a mobile phone number, you can fill in a fixed phone number, but someone must answer it. If you fill in someone else's name, be sure that the person answering the phone is talking about you.

Anyway, I must know you.

4. Not high. Look at your work, 3000-5000.