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)

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

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