Marrying Chinese in China

You need to provide passport, visa or residence permit, and a single status certificate from your country for register the marriage in mainland China. After get married, you can try to change the current visa to Q type at the exit and entry administration of the local PSB within China. If it can be done, you can stay in China for long time.
First, you need to provide passport, a passport-style photo, a completed application form, valid registration form of temporary residence, an invitation letter from your husband, and copy of his Chinese ID card, as well as your marriage certificate and other requirements. And then go to the local PSB to submit the application.