Constructors work at the construction site of Xi'an subway line 4 in Xi'an, northwest China's Shaanxi Province, Feb. 15, 2018. Subway constructors here stuck to their post on the first day of the Spring Festival holiday. (Xinhua/Liu Xiao)
Subway constructors stick to post on first day of Spring Festival holiday
Source: Xinhua| 2018-02-15 18:54:07|Editor: Lifang