Local ethnic vendors sell bagged clean air to visitors at the scenic Lianshan Mountain in Qingyuan, south China's Guangdong Province, on March 19, 2016. Many places in southern China's Guangdong Province have been blanketed by heavy smog in the past week. This has led many city residents to visit the Lianshan Mountain, where 85 percent of the land is covered by forests. Local villagers of the Zhuang and Yao ethnic groups, who often sell homegrown specialties at the scenic mountain area, have come up with the idea of selling bagged clean air to visitors. The price of a large bag of air is 30 yuan (about $4.6), while a smaller bag goes for 10 yuan. (Photo/CFP)
