Why do Chinese traditional festivals celebrate the lunar calendar instead of the new calendar?

The lunar calendar (i.e., the lunar calendar) was created by our people after a long period of exploration and exploration, which contains a combination of astronomical, geographic, natural laws, meteorological and other factors, although complicated, but cohesion of the wisdom of the Chinese people over the past 5,000 years.

The Gregorian calendar (i.e., solar calendar) was invented by the ancient Egyptian people, who were very advanced in astronomy at that time, and thus had a solar calendar based on the laws of the sun, moon and stars. The Gregorian calendar and the solar calendar are all part of the solar calendar

You can also find relevant information in Baidu's encyclopedia, but the above is purely a personal statement oh