You need to define "your". Without knowing who (or what country) this question is referring to, it's difficult to supply a proper answer.
The Chinese continued to support and to supply North Vietnam, but sometimes interered with Soviet arms shipments across China.
the industrial revolution
The Great Cultural Revolution began, China formally backed Vietnam and Chinese-Soviet relations began to divide.
The USA had not recognized Communist China since it won the Revolution in the 1940s. For Republican President Richard Nixon to go to China, meant that the USA finally accepted that the government in Beijing was legitimate and not going away. The USA also used Communist China and the Soviet Union to help it withdraw from South Vietnam in January 1973 and end it's involvement in the Vietnam War.
The Great Cultural Revolution began, China formally backed Vietnam and Chinese-Soviet relations began to divide.
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China and Vietnam
Since China was dirt poor in the 70s so Nixon made an agreement with China. If US troops withdraw from Vietnam war, China will not support the USSR. Thus American troops withdraw from Vietnam, causing the communist in Vietnam achieve victory. But in 15 years later without China's help, the USSR collapse. That's why you see China was never in the Warsaw Pact.
china, India, Vietnam,
China's cultural revolution did not effect Hinduism that much. However it did effect Buddhism In major ways. Buddhism Influenced Hinduism. Thus indirectly Hinduism was affected.
The U.S. was assisted by Canada, Australia, Korea and the Philippines. North Vietnam was helped by the U.S.S.R. and China.
South Vietnam is south of China