People exercise in the smog on a polluted day in Zhengzhou, Henan province, China, on January 9, 2017. Photo – Reuters People exercise in the smog on a polluted day in Zhengzhou, Henan province, China, on January 9, 2017.
People exercise in the smog on a polluted day in Zhengzhou, Henan province, China, on January 9, 2017. Photo – Reuters People exercise in the smog on a polluted day in Zhengzhou, Henan province, China, on January 9, 2017.