Why does Shenzhen Tieqi keep recruiting people?

Short staff. Shenzhen Iron Riders are the traffic police of Shenzhen City. They are used to quickly handle traffic accidents, alleviate traffic congestion, and maintain traffic order. Because Shenzhen City has an overpopulation and a constant stream of foreigners coming to work, resulting in traffic congestion, frequent traffic jams and traffic accidents. As a result, the traffic police are short of manpower, so they are constantly recruiting people.