Gun Luquan rings a bell for class to end at Miaoben Primary School in Zhongcheng Township, Rongjiang County, southwest China's Guizhou Province, Sept. 8, 2020. Gun Luquan and his wife Pan Mingzhen are a teacher couple who dedicated themselves to rural students at Miaoben Primary School for more than 20 years in mountainous Rongjiang County. As the school's only two remaining teaching staff members, Gun and Pan have never given up their original pursuit and tried their best to provide students with decent school experience. (Xinhua/Yang Wenbin)