HARBIN, CHINA - NOVEMBER 26: A man walks early in the morning amid heavy smog at Jiangpan Road on November 26, 2018 in Harbin, China.The smog in some areas has reduced visibility is to less than 200 meters. (Photo by Tao Zhang/Getty Images)
HARBIN, CHINA - NOVEMBER 26: A man walks early in the morning amid heavy smog at Jiangpan Road on November 26, 2018 in Harbin, China.The smog in some areas has reduced visibility is to less than 200 meters. (Photo by Tao Zhang/Getty Images)