Which Chinese character contains fire, water and earth in Jin Mu?

The word "beam" includes water, wood and gold, because "knife" is generally made of metal and tempered by fire, while "wood" grows in the soil. So it includes Jin Mu, fire, water and soil.

Another way of saying it is the word "five"

In Shuo Wen Jie Zi, it is said that "ancient sages and sages made this word after knowing five kinds of fire, water, wood, gold and earth", and "fire, water, wood, gold and earth coexist, and yin and yang will meet in the afternoon" is five kinds.