To start a new page in Wikipedia, you may take reference of the Help:Starting a new page page to assist you. Below are the guidelines for writing a China-related articles:
If you are looking for an article to write, visit the WikiProject China article request page. After your article is complete, don't forget to list it under the new articles page of WikiProject China. In addition, you are encouraged to list your article under the Did you know? section under Portal:China, following the instructions listed here.