Tourists line up to buy postcards at a themed post office in a base camp of Mount Qomolangma in southwest China's Xizang Autonomous Region, May 24, 2024. The Mount Qomolangma National Park has entered peak tourism season. From Jan. 1 to May 20 this year, the Mount Qomolangma scenic spot has received about 136,000 tourists. (Xinhua/Ding Ting)