What do Buddhists think the four elements that make up the human body mean?

The four major ones are the earth, floods, fires and strong winds. The ground is hard, the water is wet, the fire is warm and the wind is flowing. All tangible substances in the world are composed of four parts: human hair, claws, skin, bones and muscles are hard and big, and phlegm and tears are convenient to moisten; Temperature heating is a warm fire; Breathing and inhaling are flowing winds.