Experiment in Hoa Binh CESEAP-station to resaerch the flying distand of bronze arrow-head excavated in the Ancient Co Loa Citadel (Hanoi)

A silk fragment with weaving design of trade workshop name excavated from 18th mandarin's tomb (Project : Ancient Textile in Vietnam)

During excavation 2004 in Du Sang rock-shelter ( Kim Boi, Hoa Binh)

The most famous hoabinhian cave of Xom Trai (Lac Son, Hoa Binh, Vietnam)

Studio via modern X-ray film to controle relationship between facial sorf tissues and facial bone (Project : Facial reconstruction for prehistoric human skulls)