China has a lot of fertile ground for archaeological discovery. "The tomb, designated M27, is located in the Wangzhuang ruins in Yongcheng city and dates back to the middle and late periods of the Dawenkou Culture (4000 BCE-2600 BCE), a Neolithic culture in ancient China."
https://archaeologymag.com/2024/10/5000-year-old-royal-tomb-...
Having neolithic ruins doesn’t mean your civilisation developed from those societies. For example the UK didn’t evolve from whoever built Stonehenge.