On the morning of May 30th, more than 2,000 workers and students in Shanghai distributed anti-imperialist leaflets and delivered speeches on various roads in the concession, exposing the crimes of imperialism in shooting Gu Zhenghong and arresting students and opposing the "four proposals". The concession authorities arrested patriotic students on a large scale In the afternoon, more than 100 people were arrested in the old gate detention center on Nanjing Road alone. More than 10,000 angry people gathered at the gate of the old gate and shouted "Shanghai is China's Shanghai!" "Down with imperialism!" "Take back the foreign concession!" And other slogans demanding the immediate release of the arrested students. British catcher Ai Fusheng mobilized all classes to patrol and openly shot and slaughtered unarmed people, resulting in 13 deaths, dozens of serious injuries and 150 arrests. Among them, more than 40 students were arrested, 4 students were shot, 6 students were injured, 17 passers-by were injured and 3 people died. On June 1 day, three people were shot again, and 18 people were injured, which created the May 30th Massacre that shocked China and foreign countries. [