I have a fiance and we have a son together who is 4 year old in Shenzhen...

Hello,
I was married and divorced in Europe (Montenegro) my divorce is in Montenegrin language and translated into English which was notarized here in New York City. Our son is an American Citizen, however, I would like to know what do I need to bring to Chinese Consulate? I am holding an S2 Visa which is valid until 2025, with multiple entries. Thank you so much for your answer.
Sincerely,
Pietro Kalaj