Prefab houses built in quake-hit Yunnan for college entrance exam (3/4)

A worker works on the roof of a prefab house at Yingjiang First High School in Yingjiang County, southwest China's Yunnan province, June 2, 2014. Prefab houses are built for over 1,000 students here to take part in the national college entrance examination due on June 7-8. Yingjiang County was hit by a 6.1-magnitude earthquake on May 30 and a 5.6-magnitude one on May 24. (Xinhua/Hu Chao)