After sleeping for a night or two, what does it mean that first frost is little known among people?

A night or two's sleep means that the spirit of the sun is rising towards the end of the year, and (beginning of spring) first frost is gradually decreasing. Everything is first known when it comes to the world in spring. According to the relevant data, one or two years old is short of frost, and eight people know that spring comes to the world from The Occurrence of beginning of spring, and The Occurrence of beginning of spring is a seven-character quatrain written by Zhang Wei, a writer in the early Southern Song Dynasty. This is a seasonal poem. The author painted a vibrant spring scene and expressed his desire for prosperity. The first sentence says that ice and snow always melt in early spring, and the second sentence says that trees feel the breath of spring through anthropomorphic methods. This poem is lively.