Does fire represent life or water represents life? Why do all our five internal organs belong to fire?

First of all, thank you for your directional help and trust. When the universe is taiji point, people are water. When people are regarded as Tai Chi points, people contain these five elements. In other words, we need to find a reference. For example, human internal organs, wood, fire, earth and gold, correspond to liver, heart, spleen and stomach, lung and kidney. The five elements are five symbols, such as wood can also represent the head, water can also represent the waist, fire can also represent the eyes and so on.