Studing in a bronze casting workshop in Lang Rong (Van Lam, Hung Yen)
The Dongson man with war axe on his shultern as handle of a bronze dagger of 2300 years old.
During excavation 2004 in Du Sang rock-shelter ( Kim Boi, Hoa Binh)
In completing the face of a Dongsonian woman, whom skeleton was excavated 2004 in Dong Xa (Hung Yen, Vietnam)
Muong megalith tomb in 17th - 18th century (Kim Boi, Hoa Binh)