Garzê Tibetan Autonomous Prefecture, [a] often shortened to Ganzi Prefecture, [b] is an autonomous prefecture in the western arm of Sichuan province, China bordering Yunnan to the south, the Tibet Autonomous Region to the west, and Gansu to the north and northwest. [3]The prefecture's area is 151,078 square kilometres (58,332 sq mi). The population is approximately 880,000, with Tibetans ...