Hu Zunxun (L), a teacher of Jinzhai County Hope Primary School, tutors his student Hu Yali to make up the lessons she had missed in Jinzhai County, east China's Anhui Province, in this file photo taken on May, 1991. Hu Zunxun travel over 10 kilometers to help Hu Yali as she had discontinued her study for one year. [Xinhua]