Why do you say "the rule of law governs Yang"? Why does Green Play Yang? Isn't Lu Lu a musical instrument? What are the allusions? Don't copy it, thank you

According to legend, Ling Lun, a music official in the Yellow Emperor's era, used 12 hollow bamboo tubes with flat ends and inclined ends in Yinshan (now Inner Mongolia Autonomous Region), filled with ash burnt by reed film, and inserted them in the soil covered by indoor curtains to prevent wind and rain. When it is in a certain season, it will naturally make different sounds, so as to determine that the sound level is six laws and six values (the first one is called "Yellow Bell") and at the same time determine the exact time of 24 solar terms in a year (the solar term is Yang and the qi is Yin, the first one is called "beginning of winter" and the first one is called "Light Snow", and the ancients took winter as the beginning of the year). This is really a great discovery. These 12 bamboo tubes, called reed pipes and reed pipes, are not only the first tuning instruments in the world, but also the calibrator for whether China's unique calendar conforms to the four seasons' climate and actual phenology.

The accurate determination of solar term time is helpful for the growth of crops to conform to the objective law more. "Legal Day" witnessed the glory of ancient farming civilization in China.