In some cases, yes, but there is a lot of it that has diverged in the years since. In the case of Go, while it originated in China, it really flourished in Japan and the Japanese developed it a lot further, up through the beginning of the 20th century.
Throughout the 20th century, Go has gotten a lot bigger in China and Korea (where it is known as weiqi and baduk, respectively), and they are now generally favored in international matches, but before then, the Japanese were quite dominant.
As far as other pieces of culture, yes, the roots of a lot of Japanese culture come from Chinese culture. But they have had thousands of years to become distinct; calling them just "re-packaged ancient Chinese wisdom" is pretty dismissive. It is good to recognize the roots, and sometimes the Japanese themselves are a bit xenophobic about that, not recognizing those things that developed from the Chinese, but dismissing their entire culture as re-packaged Chinese culture is equally rude.
so on the assumption that go is a chinese game, japanese cant have a wisdom on it? that would be same than saying: Ok C-UNIX has been made by an american guy so no one can have wisdom on it except americans?
Sure they can, hence the "mostly" part. Of course in the course of centuries they've also diverged, as the once underdeveloped (compared to China) Japan started developing its own identity and variations.
Heck, even the 20th century provided enough rapid variation between the 2 countries.
That why I was talking about the "ancient wisdom" being repackaged.
I just went through the whole tutorial. This was a great introduction to the game. I've glanced at other tutorials in the past, but I could not really follow what was going on. After this tutorial, I feel I could actually play a game! I would lose horribly, but I could play and understand what is happening.
But some of its ancient Japanese wisdom is timeless ;-)
'Basically, I don't provide answers to problems because you will eventually find them by yourself after retrying many times.'