“印度支那”(简称“印支”)狭义上是指曾被法国占领的印度支那联邦(即越南、老挝、柬埔寨),广义上则是指夹于中国和印度两大国之间,并受两国影响的区域,也就是指除了印支半岛三国之外,再加上泰国、缅甸,总共五个国家。所谓“印支经济圈”是指印支半岛三国在经济取得迅速发展的基础上,加强同周边国家的经济联系, Indochina (“Indo-China”) narrowly refers to the Indo-China federation (ie, Vietnam, Laos, and Cambodia) that was once occupied by France and broadly refers to the two countries that are sandwiched between China and India, The area of ​​influence of the country, that is, in addition to the three Indochinese peninsula, plus Thailand, Myanmar, a total of five countries. The so-called “Indo-China economic circle” refers to the three countries of the Indochinese Peninsula, on the basis of rapid economic development, strengthening economic ties with neighboring countries,