Seven Feather Period

There are seven feathers on top, with seven holes, blowing like a crane singing in the sky, taking bones, round on the outside and square on the inside, quaint and upright, forming a unified whole. It records the beginning of heaven and earth, builds industries, and solidifies the valley, which our ancestors relied on for survival. Later, we took beasts as clothing, fought against them, and died. We used our bodies as culture, became tools, and became chaotic, becoming a great way to achieve success. Our strengths are natural laws.