Students of Yangzhou University buy studying articles for children of Dabieshan in a stationery shop in Yangzhou City, east China's Jiangsu Province, July 2, 2012. Fifteen college students from the Sunshine Society of Agriculture School of Yangzhou University arrived in Gongchong Primary School of Jinzhai County, east China's Anhui Province on Tuesday, thus starting their half-month volunteer teaching. It was the seventh year the Sunshine Society organized volunteers to teach and help impoverished children in the villages of Dabieshan Region. (Xinhua/Si Xinli)

Students of Yangzhou University hold a charity sale for children of Dabieshan Region in Yangzhou City, east China's Jiangsu Province, July 2, 2012. Fifteen college students from the Sunshine Society of Agriculture School of Yangzhou University arrived in Gongchong Primary School of Jinzhai County, east China's Anhui Province on Tuesday, thus starting their half-month volunteer teaching. It was the seventh year the Sunshine Society organized volunteers to teach and help impoverished children in the villages of Dabieshan Region. (Xinhua/Si Xinli)

A student of Yangzhou University prepares for mathematics lessons at his dormitory in Yangzhou City, east China's Jiangsu Province, July 2, 2012. Fifteen college students from the Sunshine Society of Agriculture School of Yangzhou University arrived in Gongchong Primary School of Jinzhai County, east China's Anhui Province on Tuesday, thus starting their half-month volunteer teaching. It was the seventh year the Sunshine Society organized volunteers to teach and help impoverished children in the villages of Dabieshan Region. (Xinhua/Si Xinli)

A total of 15 students of Yangzhou University who volunteered to teach children of Dabieshan Region take train from Yangzhou City, east China's Jiangsu Province, July 3, 2012. Fifteen college students from the Sunshine Society of Agriculture School of Yangzhou University arrived in Gongchong Primary School of Jinzhai County, east China's Anhui Province on Tuesday, thus starting their half-month volunteer teaching. It was the seventh year the Sunshine Society organized volunteers to teach and help impoverished children in the villages of Dabieshan Region. (Xinhua/Si Xinli)

Fifteen college students from the Sunshine Society of Agriculture School of Yangzhou University arrived in Gongchong Primary School of Jinzhai County, east China's Anhui Province on Tuesday, thus starting their half-month volunteer teaching. It was the seventh year the Sunshine Society organized volunteers to teach and help impoverished children in the villages of Dabieshan Region.