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

Hmong twisting hemp fibres (Hmong textile study)

The earliest amulet in fish form made from a big bird nail, which excavated in Du Sang rock-shelter (Kim Boi, Hoa Binh, Vietnam) in ca. 18.000 years ago

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

Studing on the dongsonian bronze drum excavated in burial field Dong Xa (Kim Dong, Hung Yen, Vietnam)