What were the twelve rhythms of ancient Chinese music called? How does it compare to modern music?

The Twelve Rhythms is the division of an octave into twelve semitones. As early as 522 BC (the 23rd year of King Jing of the Zhou Dynasty), King Jing of the Zhou Dynasty wanted to cast bells, so he asked his music officer named Zhou Shu about the sound of the law, and Zhou Shu talked about the relationship between the law and the number, and listed the names of the twelve rhythms. This incident was recorded in the book Guoyu, which was written at the beginning of the Warring States period, around the 5th century BC. It can be seen that as early as two thousand years ago, China's calculations about the twelve laws were already quite precise.

The specific names of the twelve rhythms are as follows. If we assume that the yellow bell is the "C" tone on the piano now, the other rhythms are in order to rise by a semitone

Huang Zhong, Dalu, Tai Lu, Jie Zhong, Gushu, Zhong Lu, Legendary Bell, Lin Zhong, Nan Lu, Yizhe, Wujie, Ying Zhong

The twelve rhythms were produced in the period of Spring and Autumn, Warring States in our country, which indicates that the musical activities at that time had already developed to a fairly high level. has developed to a fairly high level.