Rock mountain snail Cyclophorus, which is main food of the Hoabinhian cave dweller (Project : Zooarchaeology)

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

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

Studing in a bronze casting workshop in Lang Rong (Van Lam, Hung Yen)

Vegetable remains excavated in 2100 years old Dong Xa burial field of the Dong Son culture (Kim Dong, Hung Yen, Vietnam)