How many ideological and cultural exchanges were there in ancient China?

In the history of China for thousands of years, great cultural exchanges and integration have occurred at least three times:

For the first time, it began with the exchange of barbarian culture and Chinese culture in the Central Plains around the Spring and Autumn Period and the Warring States Period, and merged into exclusive Confucian culture in the era of Emperor Wu of the Han Dynasty. As a result, the new Confucianism was formed in the Han Dynasty, and the traditional culture showed new vitality.

The second time began with the introduction of Buddhist culture in the Eastern Han Dynasty. After Wei, Jin, Southern and Northern Dynasties, Sui and Tang Dynasties, the result was the formation of Neo-Confucianism in Song and Ming Dynasties, and the traditional culture once again showed tenacious vitality.

The third time began with the eastward spread of western Christian culture in the late Qing Dynasty. The integration is not over yet, and the debate is still inconclusive. However, from the comparison between Chinese and western cultures, we can see that the advantage of western culture lies in the level of object culture and system culture, while the advantage of China traditional culture lies in the level of concept culture.