The ancient voice of China was from high to low.

The names of five different sounds in the five-tone scale of Gong, Shang, Jiao, Zheng, Shang, Jiao, Zheng and China are similar to 1, 2, 3, 5 and 6 in the current notation. That is, the house is equal to 1(Do), the quotient is equal to 2(Re), the angle is equal to 3(Mi), the number is equal to 5(Sol), and the feather is equal to 6(La).

Source: Interactive Encyclopedia