Introduction to Stonehenge Square: Stonehenge Square is composed of twelve pillars, representing the twelve branches of the Hani people. In Mojiang, there are nine branches of the Hani ethnic group: Biyue, Haoni, Kaduo, Baihong, Simolo, Lami, Chedi, Amu and Kabie. There is a small ball on the huge pillar in the south. When the sun shines on the small ball, it will produce a projection on the ground. At noon, the projection of the small ball will fall into this shadow on the ground. Every twenty During the fourth solar term, around 13:15 Beijing time, the projection of the ball will fall on these spotlights. Then at noon on the summer solstice, the shadow of the ball will be under its feet, that is, "the shadow of the pole disappears" , the red line is the trajectory of the sun that day. By the winter solstice, the projection point of the ball is the farthest. Only during the spring and autumn equinoxes does the sun rise due east and set due west.