Wei Tao walks on the beams at the top of a high building at 3pm in the southern part of Ningbo city, East China's Zhejiang province, on July 23, 2015. [Photo/IC]

Wei Tao, 28, came from Southwest China's Guizhou province to work as a neon light installer in Ningbo city, East China's Zhejiang province.

He spends most of the daytime on high buildings in the city. In summer, Wei often prefers working as early as possible to escape the heat around noon, or he has to work under a higher temperature than the ground temperature since he is high above the ground.