There is only one place in Beijing where you can wait to be an extra in front of the Beijing Film Studio. The address is on the east side of Jimen Bridge on North Third Ring West Road in Haidian District. Note that it is only for boys to squat and wait to be extras. Girls should not go there. There are often incidents of girls being sexually assaulted after being selected there, so there is not a single young girl there. Girls actually have better channels. They don't have to start as extras, but they can start as actors with small roles that others only dream of. If you are a girl, please let me know the details.