Beijing News: The Central Meteorological Observatory continues to release a blue warning for sandstorms at 6:00 April 21: affected by cold winds and strong winds, expecting sand or dust to be raised in the southern and eastern Xinjiang, northern Qinghai, Gansu, Middle and Western Mongolia, Ningxia, Shaanxi, Middle and Western Shanxi, Central Mongolia, Western Beijing ,, Central and西部河南，山东东部，西部河北，北四川盆地和其他地区，在南新疆，西部蒙古西部，内蒙古，西甘努等的某些地区饲养沙尘暴。在密封准确仪器上做得很好； 3.用风，例如围栏，格子，临时目标等保护空气建筑，并适当放置容易受沙尘暴影响的外部物品； 4。由于可见度较低，驾驶员必须控制速度并确保安全。编辑Liu Jiani