1, Xinjiang, Tibet, Inner Mongolia, Qinghai, Hainan, Ningxia, these six areas are all remote areas, and the technical term is six provinces of aviation, so the postage is expensive.

2. Xinjiang Uygur Autonomous Region (hereinafter referred to as Xin) is a provincial administrative region in People's Republic of China (PRC), one of the five minority autonomous regions in China and the largest provincial administrative region in China. Historically, it was an important passage of the ancient Silk Road, and now it is the only place for the second "Eurasian Continental Bridge".