If I want to shoot a scene with a large number of temporary actors, do I need special permission?

http://www.chinacoproduction.com 2008-06-11 China Film Co-Production Corporation

A: If the big crowd scene only requires normal temporary actors, or is not filmed in busy traffic areas in a city, no special permission is required; however, if army members are required as temporary actors, the production team must file an application with CFCC, who will in turn submit an application to the military authorities.

ÉÏһƪ£ºWhat are the cast requirements for a co-production?     ÏÂһƪ£ºIf I¡¯m shooting a film involving minority ethnics, what should I be aware of?