It's not Sanzang, it's just a geographical name formed by division. The biggest difference lies in the language, Tibetan and Uygur are basically the same, and there are obvious differences between Kang dialect and Amdo dialect. Both Tibet and Wei belong to Tibet. Tibet refers to later Tibet, and Wei refers to Wei Tibetan area (also known as Uszang). Kangba area includes: Changdu area in Tibet, Ganzi prefecture in Sichuan, Diqing prefecture in Yunnan, Yushu area in Qinghai, etc. Amdo is: some parts of Aba Prefecture in Sichuan Province, most parts of Qinghai Province, Gannan Prefecture in Gansu Province, etc. There is a famous saying in Tibetan areas that the legal domain is called "Weizang", the horse domain is called "Amdo" and the human domain is called "Kangba", which also shows different characteristics in different places. There are many temples to defend and hide, Buddhism is promoted, Amdo grassland is vast, cattle, sheep and Kangba talents come forth in large numbers, and songs and dances are melodious. As for clothing, it is impossible to upload it because of the limited level. You can search online if you are interested. The costumes in Wei-Zang area were greatly influenced by the aristocratic atmosphere in the past, and they were luxurious and elegant, with a wide variety. Kangba and Amdo are mainly robes, and you can tell them apart by looking carefully. In addition, there are Jia Rong, Baima and other Tibetan branches.