Sandstorm problems spread Severe sandstorms from the Gobi Desert are cloaking Beijing and northeastern regions of China for the fourth time in a month and affecting air quality from South Korea to Japan MONGOLIA GOBI DESERT CHINA Beijing Shanghai Seoul Tokyo JAPAN Beijing (above): Concentration of fine particulates in air is almost 30 times World Health Organization’s air quality guideline value 1978 – Great Green Wall: China plants trees and boosts forest areas to hold back expansion of Gobi Desert Sandstorms: Four times worse than in 1960s SOUTH KOREA Apr 11, Gangneung: Wildfires cause evacuation of 300 people Apr 12: Sandstorms forecast to affect visibility in Tokyo Mar-Apr 2023: Dry weather causes fires across Mongolia’s grasslands and China’s forests EAST CHINA SEA 400km 250 miles Sources: Bloomberg, AirKorea, Japan Met Agency Picture: Getty Images © GRAPHIC NEWS