How to get port of entry Chinese family visit visa

You need an invitation letter from the family member residing in China to apply for a Q1 visa. A proof of family relationship is also needed for Q1 visa (no need for Q2), like your marriage certificate. If you plan to apply in Japan, then your residence permit in Japan is also necessary.

The invitation letter generally should contain the following information:
a. Information of the applicant, including full name, gender, date of birth, etc
b. Information about the visit, like purpose of visit, intended arrival date, place(s) of intended residence, intended duration of residence, arrival and departure dates, relation of the applicant to the inviting entity or individual, and financial source for expenditures.
c. Information regarding the inviting individual, including name, contact number, address, official stamp, signature of the inviting individual, etc.