A painter works on a locomotive at the maintenance workshop of Zhengzhou Railway Bureau, Zhengzhou of Henan province, July 15, 2012. With an average age of 49 years old, the seven-man painting team of Zhengzhou Railway Bureau is responsible for painting locomotives with different colors. In summer, temperature in the workshop is usually as high as 40 degrees Celsius and the painters still have to wear special protective clothing. [Photo/Xinhua]

A painter works on a locomotive at the maintenance workshop of Zhengzhou Railway Bureau, Zhengzhou of Henan province, July 15, 2012. [Photo/Xinhua]