Why are the clothes of mainland monks different from those of Tibetans?

Buddhism in mainland China is called Han Buddhism, and there are two kinds of costumes: one is a Buddhist robe (three clothes) for practice; The second is Hanfu (gown, etc. ) Wear it in daily life. Among them, because the climate in China is different from that in India, Sanyi is slightly different from primitive Buddhism. Buddhism in Tibet is generally called Tibetan Buddhism, and the costumes of monks are different because of the influence of Tibetan Buddhism and Han Buddhism. During the Hong Qian period, according to the regulations left by the Buddha, the "vestments" of Tibetan Buddhist monks were wrapped tightly in style and almost "soap" in color, which was more rigorous and standardized than the costumes of Buddhist monks in the mainland. However, after careful analysis, we can also find that the costumes of Tibetan sangha are also different from those of primitive monks, and their main feature is "Tianxiang". In the post-Hong period, there was a close correspondence between the colors of clothes and hats advocated by various sects and the clothing system of the central dynasty, that is, the Sakya Sect, the Kagyu Sect and the Gelug Sect, which successively grasped the local political power in the post-Hong period, changed with the evolution of the clothing system in the Yuan, Ming and Qing Dynasties (Yuan Bai, Ming Hong and Qing Huang) and had distinct characteristics of the times. [