June 2, 1942 (April 19), Imo, China and the United States signed the "Sino-US lease agreement.


Soong and Hull at the signing ceremony
1942, Soong and U.S. Secretary of State Hull was signed in Washington "China and the United States to resist aggression and mutual assistance agreement (the" Lease Agreement "or" mutual aid agreements "). Agreement statement: "the defense of the Republic of China and resist aggression for the U.S. defense relationship is of paramount importance." The two governments agreed: "The U.S. government will continue to be the President of the United States permitted to transfer or supply defense products, defense forces and defense intelligence provided to the Chinese government"; "The Chinese government will continue to assist the U.S. defense and its strengthening and its supply of goods, the supply of troops or intelligence. "According to the agreement, this month, China and the United States government in Washington, signed a $ 870 million" Sino-US Agreement on Concession supplies.