Volunteers are being invited to review and report on the quality of shows staged in Beijing's small venues as part of the city government's efforts to streamline the performance market.

Volunteers are expected to report if they find performances contain pornography, violence or libel, or if shows are performed in a way that may affect actors' health or use actors' physical defects, according to a guideline released on Sunday by the Beijing Bureau of Culture.

The guideline covers venues that hold fewer than 600 people, said Yang Guobin, chief of the department of supervision at the Beijing Bureau of Culture, who was responsible for drafting it.