Dahai, the water life, refers to people born in the year of Renxu and Guihai. The Sun Lord Xin Metal refers to a person whose birthday has a Xin Heavenly Stem, and the five elements belong to metal.
The year is the natal life, and the Nayin life is used in the yin and yang house. Xinjin, the ruler of the day, is used to speculate on fate through the Five Elements. There are different usages, so don’t mix them up. In ancient times, numerology was also based on the sound of the year of life. Nowadays, it mainly depends on the momentum and whether the owner is prosperous.