Combo photo taken on May 3, 2020 shows steel fixer Tu Zhifei bundling reinforcing bars (left) and posing for a photo at the construction site of the Renhuai-Zunyi expressway in Zunyi, southwest China's Guizhou Province. Tu, 30, from Zunyi of Guizhou, has been working as a steel fixer for more than 8 years. Many young workers have stuck to their positions during Labor Day holiday. (Xinhua/Liu Xu)