Why are China's traditional classics not popular?

There are many reasons why China's traditional classics are unpopular.

It can't be said that China's classics didn't popularize Confucianism all over the world. They are just China's classics, but they also have many shortcomings. We can't trust those classics completely. In today's era, we should treat these things dialectically, take their essence and discard their dross, which is the importance of today's era. We should follow the characteristics of the times to change these trends that conform to the times. We shouldn't always follow those old and rigid things, but China's traditional culture and morality should still be followed.