Guo Xinwang has fun with children at the Xiaoxihu kindergarten in Nanjing, capital of east China's Jiangsu Province, Sept. 4, 2018. Guo, born in 1993 and graduated from the Jiangsu Normal University, became the first and only male teacher of the Xiaoxihu kindergarten three years ago. There are 400 plus male teachers in Nanjing nowadays, up to three percent of the whole teachers working in kindergartens. (Xinhua/Li Bo)