越南国内一般都用“抵美救国抗战” Kháng chi?n ch?ng M? c?u n??c 来表达当年抗美战争。这个“国”也该是全越南而非北越。
“For the most part, the Chinese stayed in the background, rebuilding areas destroyed by U.S. bombs and manning anti-aircraft batteries. But perhaps their biggest role was preemptive: They made it clear that if U.S. ground troops invaded North Vietnam, then they would respond in kind.
Unlike during the Korean War, the United States yielded to this threat. “Their function is as a tripwire,” Moise says, “a warning to the Americans: ‘Don’t go too far… or you’ll be fighting us.’”
"This time, Johnson and his advisers paid close attention to the Chinese role. They were afraid that if the United States pushed too hard or attacked North Vietnam without restraint, they would have a replay of the Korean War. Johnson's critics later said that China was just bluffing, that the Chinese weren't serious about intervening. Harry Summers and other military writers criticized Johnson for allowing his fear of Chinese intervention to undermine his bombing campaign.
However, the new evidence from China suggests that Mao was seriously prepared to intervene. There was a secret agreement between Hanoi and Beijing that if the Americans launched a ground invasion of North Vietnam (at that time, the United States had restricted itself to a bombing campaign), China would send ground troops into North Vietnam and would not allow the United States to defeat Hanoi. If the Americans bombed North Vietnam, China would match the American military action by taking measures to protect North Vietnamese cities and to rebuild roads and bridges. They would also send anti-aircraft artillery units and army engineers to support North Vietnamese troops and help them deal with the air bombing pressure.
Meanwhile back in China, Mao was making preparations in anticipation of war with the United States. He relocated industries, universities, and research institutions in the coastal areas of eastern China to the mountainous areas of southwest China. He ordered his people to build anti-air shelters throughout China."