What does "short neck in spring" mean?

Spring neck, as far as solar terms are concerned, refers to the preparation and production stage from beginning of spring to the thawing of frozen rivers to the beginning of spring sowing, which is called spring neck. For example, Heilongjiang has a short neck in spring, which means that spring is really too short, shorter than a person's neck. The ugly and cold winter is not over yet. Most of the whole season is hard, which is more "five big and three thick". Agricultural sowing was postponed. Therefore, there is an agricultural proverb that "the neck is short when spring comes, and farm work rushes forward"! Spring is a short year in a year, and the temperature rises quickly, which is earlier in the spring. Because the beginning of spring time of next year's solar calendar is in December of last year's lunar calendar.

Since the beginning of spring, the weather has turned warmer, the climate is suitable and people feel comfortable. They didn't realize that time passed quickly and early summer was coming soon. It seems that spring is very short, so it is called "short neck in spring". Southerners think this "neck" is nominal. Just after winter, summer is just around the corner.

A metaphor is used here, which means that since beginning of spring, people feel comfortable because of the warm weather and suitable climate, and they don't realize that time passes quickly, and it will soon be early summer. It seems that spring is very short, so it is called "short neck in spring".