Where do temporary users of patent network want to mail the documents? What is the address? Did you write XXX's office on the envelope?

See the FAQ section of the website for details.

Let me extract your question for you and answer it as follows.

Q: After applying for electronic registration on the website, what certification materials do temporary users need to submit to the Patent Office after they become regular users?

Answer: Please send an electronic application user registration request, a user registration agreement in duplicate, a copy of identity certificate (individual), a copy of enterprise business license (enterprise) or a copy of organization certificate (organization), and all materials need to be signed or sealed. The mailing address is: Reception Office of China National Intellectual Property Administration Patent Office, No.6, Xitucheng Road, Jimenqiao, Haidian District, Beijing, 100088. The envelope is marked "Electronic Application for User Registration".