Skull at Bach Dang poles excavation

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)

In completing the face of a Dongsonian woman, whom skeleton was excavated 2004 in Dong Xa (Hung Yen, Vietnam)

Ethnobotanic Study 2005 in a Muong hamlet (Kim Boi, Hoa Binh)