On September 15, a video circulating from Beijing at night showed multiple barricades set up around Tiananmen Square, with plainclothes and uniformed guards, police cars, armed police, and fire trucks on the scene. Online reports indicated that Chang'an Avenue was temporarily under traffic control, with restricted access for personnel in some areas. While relevant footage and information about the controls spread online, there has been no further official explanation regarding the specific cause, duration, or handling of the situation.