Migrant workers taste just-cooked dumplings served by a volunteer to celebrate the upcoming Winter Solstice or Dongzhi at the construction site of Anhui section of Anqing-Jiujiang railway, east China's Anhui Province, Dec. 21, 2019. Lots of Chinese people still observe the old tradition of having dumplings for dinner on the Winter Solstice. (Xinhua/Cao Li)