You need to choose an appropriate company name, secure a legally owned non-residential property for the company's registered address, determine the company's business scope, and appoint the company's legal representative, shareholders, directors, supervisors, and other senior executives.

You can also learn how to register and establish a company through this video:

https://english.beijing.gov.cn/investinginbeijing/Start_Your_Business/focus_guide/investment_guide_video/202407/t20240719_3753167.html