What's it like to spend the winter in the northeast?

In mid-March, there were several rains and snows in the first two days, and the temperature has been hovering below zero. I heard from my classmates in my hometown that the grass there has grown old and thick, but how can the winter in Northeast China be so difficult? I have long wanted to go out for a spring outing. God just won't give me a chance. That tree hasn't stepped on that spring yet.