1. Those students who come to China with X or F visa should not be employed in China without permission of authorities of the Chinese government.
According to《The Exit and Entry Administration Law of the People’s Republic of China》Article 80 Illegal Employment.
Foreigner who work in China illegally shall be fined not less than RMB 5,000 but not more than RMB 20,000 Yuan; while serious violators shall be detained for not less than five days but not more than fifteen days and shall also be fined not less than RMB 5，000 yuan but not more than RMB 20,000yuan.
2. But in some certain cases, if someone applies for it to Overseas Students Office and an agreement has been made with employer, and permitting paper is issued,and then you may take that job. Anyway, try to avoid any influence to your study program.
①Approval letters by both the school and the training organization .