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)

The earliest evidence for the beginning of fine art in Vietnam : 18.000 years ago in the hoabinhian sediment of Xom Trai cave (Lac Son, Hoa Binh)

Hmong twisting hemp fibres (Hmong textile study)

PEG-treating in conservating a dongsonian dugout log coffin of 2300 years old