Bingxin mixed with water is more often a metaphor for husband and wife. Water breeds everything, and even thinks that everything in the world is born of water, and even the fetus in the belly lives in amniotic fluid at first. Water represents passion and tenderness, and fire represents masculinity. C is yang fire, symbolizing masculinity of men, and Xin is precious pearl and gold, symbolizing reserve and elegance of women. Men and women combine, and C and Xin combine to have children. This is the way of human reproduction.
The ancients thought it was a mixture of propane and octanol.
The ancients believed that if a person hit the water in the ice heart, then this person's water property was very strong. If a woman practices water by herself, then her life must be extremely rich, her husband is serious and responsible, her children are noble and talented, and her whole family is rich and harmonious. If a man hits the water in the eight characters and meets Bing Xin, then this man is mostly a person with outstanding personal ability, and often gets a virtuous wife, and his children are disappointing and filial.
In reality, Bing Xin and hydration are mainly used to embody the mode of marriage or alliance, and judge a person's marriage fortune according to his five-element preference.