Where did the earliest traditional musicology in China come from?

China's traditional musicology has a history of more than 7, years, starting from the discovery of the phenomenon of phonological system in archaeological objects. Before the Zhou Dynasty, the musical rhythm was mainly manifested by the measurement of the musical pitch of archaeological excavations, among which the measurement result of the musical pitch of the bone flute (seven holes) at Jiahu site in Wuyang, Henan Province was the most striking (Xiang Peng Huang's Study on the Measurement of the Sound of the Jia Hu Bone Flute in Wuyang). It is known that the comprehensive number of the third carbon dating in the 14th century in Jiahu site is between 7 and 8 years, and the tree-ring correction data is between 75 and 85 years. From this, it can be judged that at least seven or eight thousand years ago, the ancestors of the Chinese nation had the perceptual knowledge and production choice of a reasonable law system with six or seven tones. This discovery is in the leading position in the history of world music and musicology, and has extremely important scientific research value.