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)

The Dongsonian ramie cloth weaving pattern in detail

The Pham Huy Thong Museum with it's laboratories in Yen Hung (Quang Ninh)

The completing facial reconstructions of the 2100 years old skulls excavated in the Dong Xa dongsonian burial field (Project : Facial Reconstruction for Prehistorical Human Skulls)