Stone carving figure, estimated to be 7,200 to 8,200 years old. (Photos: People’s Daily Online)

This C-shaped jade dragon is estimated to be 5,000 to 6,500 years old.

This dragon-like jade is estimated to be 5,000 to 5,500 years old.

Jade figure, estimated to be 5,000 to 5,500 years old.

This cloud-like jade hook is estimated to be 5,000 to 5,500 years old.

Painted pottery cooker, estimated to be 3,500 to 4,000 years old.

Stone carving of a human figure, estimated to be 5,000 to 5,500 years old.

Human-like pottery pot, estimated to be 4,000 to 5,000 years old.