Mao travelled to the Soviet Union in order to sign the Treaty after its details had been concluded and this was the only time that he travelled outside China for the duration of his life. The Treaty dealt with a range of issues such as Soviet privileges in Xinjiang and Manchuria and one of its most important points was the provision of a $300 million loan from the Soviet Union to the PRC, which had suffered economically and logistically from over a decade of intense warfare. The treaty did not prevent relations between Beijing and Moscow from drastic deterioration in the late 1950s - early 1960s, at the time of the Sino-Soviet split. In light of opening up China to the international market and the expiration of the Treaty, Deng Xiaoping wanted China not to negotiate with the Soviets unless they agreed to China's demands. Those were that the Soviets retreated from Afghanistan, removed their troops from Mongolia and Sino-Soviet borders and stopped supporting Vietnam's invasion of Cambodia. The treaty expired in 1979, which allowed China to attack Vietnam, a Soviet ally, in the Third Indochina War as a response to Vietnam's invasion of Cambodia, as the treaty had prevented China from attacking Soviet allies.