I'm Richelle From Bogo City Philippnes, is bank statement necessary

I have a Sister living in China and she is married with White American working in China as a English Teacher. I want to visit my Sister and my Brother-in-law with my Partner soon as possible for important meeting. we will go together in China.
I dont have bank account but my Partner had. Do i still need to get a Bank Account or Bank Certificate? So that i could go to China to Visit my Sister and My Brother-in-law.
What shall i do?What is the Requirements needed?