The 3D reconstruction of the owner of a Qin Dynasty (221-206 BC) tomb unearthed at Shuihudi village, Hubei province, is displayed at a news conference in the province's capital Wuhan in late March.

The idea of making weapons from the Qin Dynasty (221BC-206BC) jumped into Mao Naimin's head 25 years ago. He has not stopped since then.