The police have no fixed clothing, which varies from place to place. For example, the official uniforms in Beijing and other places are security uniforms, because the police in Beijing are also affiliated with security companies, and the personnel are provided by security companies, while the mainland generally wears police uniforms directly, but does not wear police titles (some are also decorative titles), and the words "police or police officers" are clearly marked on the clothes. Railway police stations are department-level units, so they are more formal than ordinary police stations, and generally do not provide police uniforms for security guards.