Workers seen at factory of Harbin Electric Machinery Company Limited in China's Heilongjiang

A worker is seen at a boiler production factory of Harbin Boiler Company Limited in Harbin, northeast China's Heilongjiang Province, Sept. 4, 2019. The group of photos uses the light and shadow in photography to outline the labor scene of the industrial workers in China's Heilongjiang Province. (Xinhua/Wang Jianwei)