The essence of the Book of Changes is that Yin and Yang and five elements (gold, wood, water, earth and fire) 1, 3, 5, 7 and 9 belong to Yang; 2, 4, 6, 8, 10 belongs to yin. If the number exceeds ten, there is only one digit left for calculation. For example, 15 is reduced to 5, which belongs to positive soil; 52 is reduced to 2, which belongs to shady wood, and so on.
1.2 wood 3.4 fire 5.6 soil 7.8 gold 9.0 water.
bright
16
draw
It belongs to the earth.
western
6 Hua
It belongs to the earth.
The two words are the same.
rain
8 flowers
Belong to yin gold
surname
10 China
Belong to yin water