How much of Japan's traditional culture comes from China ?

[Maciamo]

Are Chinese culture(s) really that 'pure'? What we know as the Han Chineses are actually a complex mix of many different ethic groups, each with their own unique cultures. The Hakkas for instance orginated from the Northen China, currently settled largely in the Southen Guandong province, Fujian, Taiwan, Hong Kong and also many South East Asian countries. They were also said to be genetically more similar/much closer to the Koreans and Japanese compared that any other ethnic groups of China, now all assimulated under a common 'Han' ethnicity.

So you are saying that Chinese culture isn't so pure because China is not ethnically uniform ? I believe there is such a think as British culture or American culture, yet these countries are even less ethnically "pure". Culture is something that develops over time in a common society (whatever its ethnic composition) and evolves constantly. In China's case, most of the culture developed on the territory of present-day China, even if there were movements of ethnicities within that territory over time. Apart from Buddhism, almost everything we associate with traditional Chinese culture (Taoism, Feng Shui, Confucianism, Chinese zodiacs, festivals, clothes, architecture...) originally comes from China, if I am not mistaken. If 5 or 10% of traditional Chinese culture was imported, in Japan's case it is more like 90%. And interestingly, most of the Japanese imports do not come from Korea (where the population originated), but from China. This shows that ethnicity and culture are not related.