found this link, which explains a bit
http://lawandborder.com/faq-new-china-visa-law/#STUDENTS_AND_INTERNS
Under the new rules, a person with a residence certificate for study who wants to take a part-time job or internship off campus should obtain approval from the school, then apply to the PSB Exit-Entry Administration for a notation to the residence certificate showing the part-time job or the location and period of internship off campus. (State Council regs, art. 22). Notice that short-term students with X2 visas do not have such opportunities.
The law delegates to the Ministry of Education the obligation to establish a framework for foreign students to obtain work authorization. (EEAL, art. 42.). As of May 1, 2014, the national framework has not been published. Shanghai has issued interim rules that allow for off-campus practical training without pay (except for reimbursement of travel and meal expenses). Yet in many cities it’s not yet possible to apply for authorization for a part-time job or internship, except on an ad-hoc basis.
It’s illegal for foreign students to work without authorization or beyond the scope authorized. (EEAL, art. 43(3).)
In contrast, under former rules, “work-study” was allowed in accordance with the school’s regulations. (Rules on Foreign Student Enrollment in Institutions of Higher Education, promulgated Jan. 31, 2000, by the Ministries of Education, Foreign Affairs, and Public Security, art. 36).