China is well known for its ability to detain foreigners from exiting the country. It is often used to settle business conflict between foreigners and Chinese companies. The Chinese company contacts the police to say that a foreigner has not paid or lived up to some business dealing and Chinese border control puts a ban on the foreigner’s exit. These are called “exit bans“.
Bian kong, “边控“， short for bianjing kongzhi, “边境控制” is a system that can bar a foreigner from leaving China. We normally call it an “exit ban”
