May Day celebration was held at the hall in Hanoi under the pressure of President Ho Chi Minh, Ie. Dvan, the first secretary of the Vietnam Labour Party, Troung Chinh, chairman of the people's congress, Tham Van Dong, Premier, Vo Nguyan Giap, Defense Minister and other leaders of North Vietnam on May 1st. More than 1,500 North Vietnam leaders assembled this May Day celebration from all parts of North Vietnam as the celebrations was held inside the hall as they feared any U.S. sudden bombing on Hanoi. Because, all prominent leaders of North Vietnam assembled in this hall and this is very rare occasion that they could meet at one time at one plane together.

They welcomed visiting Italian Communist leaders and thanked their support and cooperation with North Vietnam government.

In an speech delivered by President Ho Chin Minh, he joked that he wishes to have a big party in celebration of the fact that if North Vietnamese shot down more than 300 U.S. planes in the near future with a sense of humour.

Tham Ko Viet, Chairman of North Vietnam General Council delivered a speech in succession to President Ho Chi Minh that they shall redouble their effort to fight against American aggressor and unite Vietnamese and shall cooperate South Vietnamese for their liberation from tyranny of U.S. imperialism and they shall devote themselves to establish socialistic country in North. More than 1,500 leaders who participated in this celebration shouted "Down with U.S. Imperialism and thanked for support for North Vietnam by various socialistic countries and May Day.