Fifty-five years ago today, on May 20, 1970 (April 16, 1970 in the lunar calendar), Mao Zedong issued an anti-American statement. On May 20, 1970, Mao Zedong issued a statement entitled "People all over the world unite to defeat American invaders and all their lackeys". On April 30, 70,000 American and South Vietnamese soldiers invaded Cambodia from southern Vietnam. On May 1st and 2nd, the U.S. military resumed bombing of Quang Binh and Nghe An provinces of the Vietnamese * Republic, further expanding the war of aggression against Indochina. On the 4th, the Chinese government issued a statement condemning the crime of aggression committed by the US government. On May 20, Mao Zedong said in his statement: "At present, there is a climax of the struggle against American imperialism in the world." "I warmly support the spirit of the struggle against American imperialism and its lackeys, Prince Norodom Sihanouk, the head of Cambodia." "The Chinese people firmly support the revolutionary struggle of the people of Indochina and other countries in the world against American imperialism and its lackeys." "Countless facts have proved that the weak can defeat the strong. Mao Zedong attended the conference, and Prince Sihanouk was also invited to attend the conference.