In ancient times, people wanted to record the melody and communicate with each other. But there is no standard between the speaker and the listener, and the sound and melody do not exist through the ear. In order to establish the standard of melody, it is said that in the shadow of Kunlun Mountain, the ancients hollowed it out with different lengths of bamboo, and when the weather turned cold, they buried it in the ravine, leaving only a hole flush with the ground and sealing the exposed hole with bamboo pieces. In the second year, with the climate warming, the accumulated airflow on the earth began to surge. One day, the big bamboo tube with the largest rustic concentration burst out of the bamboo film first, making a "buzzing" sound, which was called "yellow bell" by the ancients. The other eleven tones are determined by the three-point profit and loss method, thus making twelve tones. Huang Zhongsheng gave birth, Lin Zhongsheng was too clustered, too clustered, Lu Nan gave birth, Gu Xi gave birth to Zhong, Ying Zhong gave birth to Da Lu, Da Lu gave birth to Yi, and Yi gave birth to Zhong Lu without shooting.

Later, due to the long journey to Kunlun, the climate changed every year. "Therefore, from winter to summer, the son of heaven often ordered the palace to the sun ... Chen Bayin, listening to songs, watching the scenery, waiting for the law, exercising the dust and benefiting Yin and Yang. In winter, when the sun is shining, the music is clear, the scenery is long, the yellow bell is connected, and the dust is light and balanced. In summer, when Yin Qi is in harmony, the music is turbid, the scenery is extremely short, guests pass by and the dust is low. ..... The way to wait for the weather is to have three rooms, the doors are closed, and the "gap" will last for several weeks, all of which are twips. Take wood as a case in the room, and each method is one, which is high inside and low outside. From its orientation, add laws to it to suppress its inner end and wait for the case. The angry ones are gray. It is pneumatic, and its dust is dispersed; People and the breeze gathered in the ashes. Waiting in the temple, using jade method 12. But the next day, you can wait for the funeral, and the bamboo method is sixty. Treat the day like a calendar. ""were "and" calligraphy "

"Lu's Spring and Autumn Annals" contains: "The emperor ordered Ling Lun to be the law, and Ling Lun took the bamboo from the cave and valley for the yin of Kunlun, playing it for three inches and nine minutes, thinking it was the palace of Huang Zhong, playing four houses and playing twelve drums at a time ... making ten notes and two laws ... Here, the system of Huang Zhong's three inches and nine minutes was clarified, which made an earlier written record for the formation of the twelve laws of three-point profit and loss. It provides a clear written basis for modern people to study China's temperament. " Note in the Book of the Later Han Dynasty: "Bamboo sounds are irreconcilable, pretending to be accurate, and the shape of accuracy is like a harp. Thirteen strings long and nine feet hidden, which should be nine inches according to Huang Zhonglv; The middle chord, with a sense of proportion, is thought to be 60% turbid. This paper expounds the relationship between legal norms and string law.

Music with different melodies expresses people's different emotions. "Every sound is born by people's hearts, moved by people's hearts, and made the best of everything." Emotion is moved by things, so it is shaped by sound. The sound is corresponding, so it changes; Turn into a square, that is, sound; The sound is fun to listen to and fun to do. ..... It was because of his sadness that his voice was loud enough to kill him; Those who feel happy, their voices are slow; Those who are satisfied with their feelings have dispersed their voices; An angry person has a rough voice; Those who respect their hearts are straight-talking and mean; Those who are caring, their voices are gentle. Today, the Young Pioneers' National Anthem, Military Songs and Team Songs are full of respect for the country, the army and the organization. "Their voices are straightforward and inexpensive"; Folk songs ","folk songs "and" love songs "are emotional and" soft in voice "; Waltz, welcome song, interlude, expressing joy, "its voice is slow"; Of course, funeral music, funeral music and funeral music are also inevitably "killed by their voices."