Law and Lu regulate Yang. What is Fahe Lu? What is six laws and six lv? Why can I adjust Yang?

Fa and Lu are definitely called Fa Guan and Lu Guan.

Lu Lu refers to twelve Lv, namely Huangzhong, Dalu, Taiqun, Jiazhong, Gu Xi, Zhonglu, Yibin, Lin Zhong, Yize, Nanlv, Wushe and Zhong Ying. Among them, six odd numbers are yang, which is called six laws, and six even numbers are yin, which is called six laws.

"On Spirit" in the era of the Yellow Emperor used 12 bamboo tubes with a certain length (tubes with different lengths vibrate at different frequencies), and the different lengths make them conform to the frequencies of the Twelve Laws respectively.

Then decorate the ash after burning reed in the cylinder (this ash is relatively light) and insert it vertically into the soil according to a certain orientation (this is related to the five elements).

At that time, when the wind reached a certain solar term, the "geomagnetic wave" vibrated the bamboo tube, "blew" reed ash out of the bamboo tube, and at the same time made this rhythmic sound (similar to playing a flute).

Use this sound to set the key, which is equivalent to the c key of modern music; At the same time, a time can be set to adjust the change of phenology, so it is called "rhythm yang regulation"

Extended data:

Legal management

Make sure that the yellow bell is made of bamboo. The long bamboo tube has a low sound, while the short bamboo tube has a high sound. The length of an instrument can't be determined until the temperament standard is determined. "Put all these bamboo tubes on the indoor table according to their instructions. Corresponding to the air from winter to the sun is a yellow bell.

The ancients defined the length of this yellow bell rhythmic tube as nine inches. It is worth noting that the ancient people set the standard of weights and measures based on the shape of the yellow bell, not on the previous scale. ) One inch and ten minutes.

There are also strict requirements on the aspect ratio of this yellow bell tube, that is, if its length is nine inches, its internal cross-sectional area should be 90 square points, and its volume should be 8 10 cubic points. If it does not meet this requirement, it is necessary to increase or decrease its length and thickness through profit and loss, and re-determine it through climate until it is fully met.

References:

Baidu Encyclopedia-Green Green