The fifth round of sand and dust weather since March is currently affecting the northern region of China, and even a few southern regions. The Central Meteorological Observatory issued a blue warning for sandstorms at 4:9 on the 8th.
The peak concentration of sunshine PM6 in Shandong even reached 10 micrograms / cubic meter. The main sources of sandstorms in China are concentrated in desert areas such as southern Xinjiang, Gansu Hexi Corridor, and central and western Inner Mongolia.