Japanese is influenced by China's traditional culture.

The ancient buildings completely follow the style of China;

In manufacturing, Japanese knives have been improved since the Tang Dynasty.

Male chauvinism is deeply influenced by Confucianism in China, and now China is worse than Japanese.

All kinds of etiquette, for teachers and elders, have evolved on the basis of Confucianism;

Needless to say, before the Tang Dynasty in China, there was no writing in Japan, only language. . In addition to Chinese characters, many of them are China's previous pinyin letters (now unified with Latin pinyin);

Generally speaking, it was the Tang Dynasty that had the deepest influence on Japan. You can compare the living habits and culture of the ancient people in the Tang Dynasty with Japan, and you will find that China is everywhere in Japan.

Of course, learning western culture after the Meiji Restoration is another story.