What is the saying about the cold in beginning of spring?

As the saying goes, beginning of spring is cold and spring is warm.

Beginning of spring season, in fact, is not warm, not to the real spring. Even, there is a folk saying that "it took 48 days to fight the wind." In other words, although beginning of spring arrived, it was still very cold before the vernal equinox.

However, if the weather gets warmer in early spring, crops such as winter wheat will turn green, and early spring crops will begin to enter a critical stage. At this time, the weather is very changeable, and sometimes, there will be a cold spring. Once there is late spring cold, the growth of crops will inevitably be extremely seriously affected.