The earthly branches and five elements: Zishui, Ugly Soil, Yinmu, Maomu, Chentu, Four Fires, Five Fires, Weitu, Shen Jin, Youjin, Xutu and Haishui.
The five elements coexist: water is like fire, fire is like gold, Jin Kemu, Mu Ke Tu, Tu Ke Shui.
Therefore, the soil is limited by seawater.