Guan Wangxun repairs wooden stools in Shan'ao Village of Xingan County in Ji'an, east China's Jiangxi Province, Nov. 16, 2016. The average altitude of Shan'ao Village is about 1,500 meters. The 57-year-old Guan has been a teacher in this rural village for 40 years since his graduation from high school. At present, he is the sole teacher of the teaching point in Shan'ao. (Xinhua/Hu Chenhuan)