In this Week in Photos, northern and southern China cope with a severe spell of air pollution; volunteers wear masks on World AIDS Day to promote awareness and acceptance of people with HIV/AIDS in Chongqing; and police officers and officials inspect the scene of an explosion near a chemical factory in Zhangjiakou, Hebei province.
Police officers and officials inspect the site of an explosion near a chemical factory in Zhangjiakou, Hebei province, Nov. 28, 2018. Fred Dufour/AFP/VCG
A young swimmer enjoys the partially frozen waters of the Songhuajiang River in Harbin, Heilongjiang province, Dec. 2, 2018. Zhang Shu/VCG
Volunteers wear masks on World AIDS Day to promote awareness and acceptance of people with HIV/AIDS in Chongqing, Nov. 30, 2018. Chen Chao/CNS/VCG
A pink wedding dress on display in an alley near Jiangnan Road, a bridal wholesale area of Guangzhou, Guangdong province, Nov. 26, 2018. Betsy Joles/Getty Images/VCG
An aerial view of golden gingko tress in Nanjing, Jiangsu province, Dec. 1, 2018. Su Yang/IC
A police officer wearing a mask to ward against air pollution directs traffic in Beijing, Nov. 26, 2018. IC
Scientist He Jiankui, who sparked a global outcry when it was revealed that his lab had produced the world’s first genetically engineered humans, prepares to speak at the Second International Summit on Human Genome Editing in Hong Kong, Nov. 28, 2018. Anthony Wallace/ AFP/VCG