Chinese music began its journey 3000 years ago. European music, however, had not yet gotten off the ground. This difference was due to artistic ritualistic Confucius proposition thus accompany such acts.
This was not the only bet of Chinese music, as during the Han Dynasty (206 BC - 220 AD) A Musical Office was established to collect country music.
Later, contact with European music would lead to a greater variety of Chinese music. Also possible the arrival of new instruments.
The last point to note would be the Academy pear garden, originated in the Tang Dynasty (713 AD - 755 AD). This academy music promoted through the development of national music and allowing a classic style that is the source of what could be described as traditional Chinese music to settle.