(240616) -- ZHONGWEI, June 16, 2024 (Xinhua) -- Tang Ximing (1st L), a senior engineer at a state-owned forestry farm in Zhongwei, introduces the using of straw checkerboards to international youths in northwest China's Ningxia Hui Autonomous Region, May 31, 2024.
In the 1950s, to protect China's first railway that runs through a desert, th
