early 15th century, middle and late 15th century, 21st century, 3rd century, Xia, Shang, Western Zhou to Spring and Autumn Period, Warring States, Qin and Han Dynasties. Musical motivation is a musical term, and its development can be divided into four stages. The first stage is Burgundy School in the early 15th century, which represents composers Duffy and Binchois. The second stage is the development of China music in the middle and late 15th century, Flanders, and the dynamic sandwich case, from 21st century BC to 3rd century AD, from Xia, Shang and Western Zhou Dynasties to Spring and Autumn Period, Warring States Period and Qin and Han Dynasties. This period is the later development of China music.