Tell me my opinion:
1, emphasizing the source of vitality. If yin is wood after all, see the wood first and see you again.
2. reuse things. There are different depths of gas hidden on the moon, so it is necessary to find out which one was used at that time. For example, when the fire of silver moon C is used, the fire of C can also be used.
3, see through the dry. This qi can be used naturally, by God who does things, and by God who does nothing.
4, eight characters are important in cooperation, and the above three are the basis for cooperation with by going up one flight of stairs.