与神州大地上大多数河流、山脉呈现东西走向不同,在我国西藏东部和四川、云南西部一带,存在一个山脉、河流均呈南北走向的独特地理单元,这就是闻名于世的横断山脉高山峡谷地带。怒江、澜沧江、金沙江、雅砻江、大渡河、岷江六条大江自北向南从中穿流而过,在峰峦叠嶂中开辟出一条条南北走向的天然河谷通道,成为众多民族或族群南来北往、频繁迁徙流动的场所。这就是神秘的藏彝走廊。 In contrast to most rivers and mountains in the vast land of China, the east-west direction is different. In the areas of eastern Tibet, Sichuan and western Yunnan, there is a unique geographical unit with mountains and rivers all over the country, which is known as the Hengduan Mountains alpine valley . The Nujiang River, the Lancang River, the Jinsha River, the Yalong River, the Dadu River and the Minjiang River flow through the six major rivers from north to south, opening up a natural north-south valley channel in the mountainous ridges and peaks and becoming a large number of nationalities or ethnic groups traveling south to north , Frequent migration of the place. This is the mysterious Tibetan-Yi corridor.