Southwest direction. Tibet is located in the southwest of People's Republic of China (PRC) (PRC), southwest of Qinghai-Tibet Plateau, and Nanjing is located in the middle of People's Republic of China (PRC), in the lower reaches of the Yangtze River, near the sea, so Tibet is located in the southwest of Nanjing. Xizang Autonomous Region, referred to as Tibet for short, is one of the five minority autonomous regions in China. Its capital is Lhasa, and Nanjing is Ning, which was called Jinling in ancient times. It is the capital of Jiangsu, a sub-provincial city, a megacity and the core city of Nanjing metropolitan area.