Compasses in nature include geese, ants, tree rings, the moon and moss. Goose: Fly south in autumn. Ant: The nest faces south. Tree rings: can also be distinguished. These rings face south in width and north in density. Because the south grows faster than the north, the annual ring interval is wider. Moon: the crescent moon on the fourth day of the third day, which is low in the west at sunset; On the eighth day of the seventh lunar month, the sun just went down, just above our heads. In the half moon, the sun has just set and the moon rises in the east. The direction of the moon at night is: the first quarter moon, in the south at 6 pm, and in the west at 12 pm. The full moon (14- 18) is in the east at 6 pm, in the south at 12 pm, and in the west at 6 am the next day. First quarter moon, in the east at night 12, and in the south at 6 o'clock the next morning. Moss: the moss-covered side of the rock is the north side, and the dry and exposed side is the south side. So the natural compass includes geese, ants, rings, the moon and moss.