Why do horses belong to noon fire in geomantic omen and noon water in fortune telling (noon life is Tianhe)?

Wu Bing Ding Wei Tian He Shui

Ding Bing is a fire, and noon is a place where fire is flourishing, while Yin Na is water, and water comes from fire. You can't have it if you're not a silver man. Therefore, the rivers in the sky and the rivers in the water should be full of vitality, so that there will be results and benefits.

Tip: Tianhe water is in the sky, so the gold, water, wood, fire and earth on the ground can't restrain him, or complement each other, or the Tianhe water is nourishing and beneficial. The book of life says that only the soil on the wall collides with him, which is harmful to the work of nature.