2020-03-20Construction workers carry material at the site of a hotel project in Beijing, on March 19, 2020. [Photo by Feng Yongbin/chinadaily.com.cn] Construction workers are busy on the site of a subway line in Beijing, on March 19, 2020. [Photo by Feng Yongbin/chinadaily.com.cn]A construction worker carries hard hats on a site in Beijing, on March 16, 2020. [Photo by Zou Hong/chinadaily.com.cn]Sparks fly as a construction worker labors at a site in Beijing, on March 16, 2020. [Photo by Zou Hong/chinadaily.com.cn]A light on the hard hat helps a laborer work at a construction site in Beijing, on March 16, 2020. [Photo by Zou Hong/chinadaily.com.cn]