Master Metaphysics, please come in.

Generally speaking, from the Xia Dynasty, the first month of the lunar calendar was built to be spring, and the five elements belonged to wood, and everything revived. Afternoon is summer, fire represents growth, Shen You belongs to autumn, gold represents coldness and convergence, and Haizi belongs to winter water, representing Tibet.

Someone asked, you have wood, fire, gold and water here. Where is the soil? In fact, only these four lines correspond to the four seasons. Spring belongs to wood, summer belongs to fire, autumn belongs to gold, winter belongs to water, and soil is in the four seasons, which is called four seasons soil. At the turn of spring and summer, it is Chen, with 15 soil, but not at the turn of summer and autumn, with 15 soil, and at the turn of autumn and winter and spring, it is Xu.

That's all. I hope I can help you.