Why are there many warm imprisoning winds in Northeast China in winter and spring?

The reason why there are many warm and windy winds in Northeast China in winter and spring is because the climate in Northeast China is characterized by long and cold winters and short and warm summers, with precipitation concentrated in summer and more snowfall in winter. When the blocked front crosses the boundary, there is more complicated weather associated with the original front. Blocking fronts mainly appear in Northeast China and North China. Frontal activities in these areas are frequent, with the most in spring.