A worker labors 1,840 meters below ground under the Qinling Mountains in northwest China's Shaanxi Province, Nov. 19, 2020. With the temperature of over 40 degrees Celsius and 90 percent in relative humidity, workers labor in a tunnel of a water diversion project under the Qinling Mountains. Upon completion, water from the Hanjiang River, a major tributary of the Yangtze River, will flow through the 9,830-meter-long tunnel to the Weihe River, a tributary of the Yellow River, to ease water supply strains in central Shaanxi. (Xinhua/Liu Xiao)
