Ten-year-old Li Junlin(C) and nine-year-old Li Junheng take a train to Shanghai with their mother Liu Ying to meet their father in Yingshang County, east China's Anhui Province, Feb, 9, 2018. Children here choose to go to their parents' working place during their winter vacation. (Xinhua/Liu Junxi)

Ten-year-old Lu Wenhui(L) and 15-year-old Lu Wei take a train to Shanghai with their mother Zheng Li to meet their father in Yingshang County, east China's Anhui Province, Feb, 9, 2018. Children here choose to go to their parents' working place during their winter vacation. (Xinhua/Liu Junxi)

Eight-year-old Wang Menghan(L) and 11-year-old Wang Tianle wait for taking a train to Shanghai to meet their mother in Yingshang County, east China's Anhui Province, Feb, 9, 2018. Children here choose to go to their parents' working place during their winter vacation. (Xinhua/Liu Junxi)

13-year-old Duan Peidong(R) and sister Duan Wenwen take a train to Shanghai to meet their mother in Yingshang County, east China's Anhui Province, Feb, 9, 2018. Children here choose to go to their parents' working place during their winter vacation.(Xinhua/Liu Junxi)

Four-year-old Huang Yifan(2nd L) and four-year-old Liu Junjie(1st R) take a train to Shanghai to meet their father in Yingshang County, east China's Anhui Province, Feb, 9, 2018. Children here choose to go to their parents' working place during their winter vacation. (Xinhua/Liu Junxi)