Foreigners holding business visas are generally not allowed to work in China.
The main purpose of a business visa is to conduct business activities, such as business visits, negotiations, and signing contracts, rather than employment.
If foreigners want to work legally in China, they must hold a work visa. The application for a work visa requires a series of approval procedures, including employers providing relevant materials and foreigners meeting certain qualification requirements.
For example, a foreign businessman holding a business visa comes to China to negotiate cooperation with Chinese companies, during which he cannot engage in any employment with Chinese companies. But if he subsequently reaches a work agreement with a Chinese company, he will need to apply for a work visa to obtain legal qualifications to work in China.