2. Mutual development refers to the mutual help and promotion between two things with different attributes; Five elements coexist: Jinshui, aquatic wood, Muhuo, Huotu and Primary Gold.
Wood fire: wood dry warm fire;
Fire-born soil: burning wood-born soil;
Primary gold: primary gold;
Golden raw water: golden needle melts raw water;
Aquatic wood: Water moistens trees.
3. Water: Yin in Yin is the final state of the five elements, which is called Laoyin. It means the end of things, the cathode becomes the sun, and then becomes wood, so water can generate wood, and the five elements maintain continuous operation. Water is moist, it flows downward, its appearance is shapeless, and it is shaped by various instruments, so water has the characteristics of randomness.
3. Water is the smallest liquid in the five elements, so it has permeability. Water backfires, and everything backfires. Its nature is cold, and its time sequence is winter. Yi Yun: "The orientation of heaven and earth" means that, as far as the northern branch is concerned, the northern branch is the Polaris in the sky, which is the only one in all galaxies that does not move. Therefore, people who sail take Polaris as the direction sign, and this place is also the dividing point between the cathode sun and Yin and Yang.