Snakes are cold-blooded animals, so they will end hibernation and start to act only when the weather becomes very warm. The presence of snakes next year means a sign of cold and warmth next spring. People have found that if the snakes in spring are over If there are more snakes in spring, the weather will become very warm soon after the beginning of spring. On the contrary, if there are few snakes in spring, not only will the temperature rise slowly, but also late-spring cold weather will be particularly prone to occur. Next year there will be three snakes making spring. There are a few spring snakes, which means that next spring the weather will be slightly colder and late spring cold will easily occur. Farmers should be prepared in advance to prevent late spring cold.