Minzu means nation in Chinese, and refers to the Chinese nation as the collection of five large ethnicities: the Han Chinese, the Man Chinese or Manchus, the Meng or Mongols, the Hui or Muslim Chinese, and Zang or Tibetan Chinese.
Minzu is a recognition of the multi-ethnic character of the Chinese nation, but it is also a nationalist concept that is used to suppress any attempt of secession.
Both Taiwan and Mainland China were founded under this principle.
India should have to give right to Kashmiri people to choose their way that either they want independence or they want to merge with Pakistan or India.