In winter and spring, the north of China is often affected by the cold wind. Why is there no precipitation, which leads to strong winds or sandstorms?

1 in winter and spring, northerly winds prevailed in China, mostly from western Siberia and Mongolia, belonging to cold and dry continental winds. Although there is a cold front crossing the border, there is no obvious temperature difference with the air mass in China. Coupled with dryness, less precipitation and dry climate. In winter and spring, the vegetation coverage is low, the surface is bare, and the dust is not easy to solidify, so it is dusty. What the two upstairs said is also very reasonable, only for communication.