It's in the archaeological data and it's the history of settlement and development of humanity

The yellow River a Chinese civilization was one of the first places of pubert agriculture same as the fertile crescent in present day Syria, Iraq and parts of Turkey

Over 13,000 years humanity has built settlements and expanded around the globe

From China be one of the first places to develop agriculture had a head start over its neighbors

And to put a long story short human history is bloody very violent and it's very Human it's something to be aware of

And not really something to be embarrassed about other whys any body born before 1995 was evil