In the city of Lhasa, a post office called "Heavenly Xizang" has become a draw for tourists from both near and far. It also serves as a window for people to learn about Xizang. CGTN reporter Zheng Yibing visited it and filed this report on the commemorative stamps for the 60th anniversary of the founding of the Xizang Autonomous Region, as well as postcards with good wishes.