The first pebble tool with a narrow and curved polished edge. The tool is collected in the rock-shelter Du Sang (Hoa Binh, Vietnam)

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

A Muong woman in weaving (Lac Son, Hoa Binh) (Muong Textile Study)

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

The earliest amulet in fish form made from a big bird nail, which excavated in Du Sang rock-shelter (Kim Boi, Hoa Binh, Vietnam) in ca. 18.000 years ago