What does beginning of spring mean by dressing children with spring chicken?

The beginning of spring solar term of the lunar calendar is coming. In China, beginning of spring has the custom of dressing children with "Spring Chicken", which means ample food and clothing, vigorous development and good luck.

When spring comes, the county magistrate will dig a hole in the land with local celebrities, and then put light materials such as feathers and chicken feathers into the hole. At a certain time, the feathers and chicken feathers in the pit will float up from the pit. This moment is the beginning of spring, and people will set off firecrackers to celebrate, hoping for a good weather and a good harvest in the coming year. Lunar beginning of spring solar term is coming.