Guo Xinwang tells story for children at the Xiaoxihu kindergarten in Nanjing, capital of east China's Jiangsu Province, Sept. 6, 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)

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)

Guo Xinwang (2nd R, back) attends a male teacher meeting in Nanjing, capital of east China's Jiangsu Province, Sept. 5, 2018. Xiaoxihu kindergarten in Nanjing, capital of east China's Jiangsu Province, Sept. 6, 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)

Guo Xinwang talks with children at the Xiaoxihu kindergarten in Nanjing, capital of east China's Jiangsu Province, Sept. 6, 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)

Guo Xinwang plays games with children at the Xiaoxihu kindergarten in Nanjing, capital of east China's Jiangsu Province, Sept. 6, 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)

Guo Xinwang looks at a photo of children in his cellphone at the Xiaoxihu kindergarten in Nanjing, capital of east China's Jiangsu Province, Sept. 6, 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)

Guo Xinwang (L) learns teaching method from a female teacher during break at the Xiaoxihu kindergarten in Nanjing, capital of east China's Jiangsu Province, Sept. 6, 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)

Guo Xinwang has fun with children at the Xiaoxihu kindergarten in Nanjing, capital of east China's Jiangsu Province, Sept. 6, 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)

Guo Xinwang prepares materials for teaching at the Xiaoxihu kindergarten in Nanjing, capital of east China's Jiangsu Province, Sept. 6, 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)