The find at Xigou points to an increasing diversity of ancient human ancestor species in China over a 90,000-year period, with detailed analyses showing that hominin inhabitants employed sophisticated stone toolmaking methods to adapt to fluctuating environments in Eastern Asia.

The find at Xigou points to an increasing diversity of ancient human ancestor species in China over a 90,000-year period, with detailed analyses showing that hominin inhabitants employed sophisticated stone toolmaking methods to adapt to fluctuating environments in Eastern Asia.