In 1985 China began to cooperate with the United States in drug control,and in 1987 the governments of the two nations signed the Sino-US Memorandum of Cooperation in Narcotic Drugs Control.

• 中国与美国从1985年开始进行禁毒合作，1987年，两国政府签署《中美禁毒合作备忘录》。