The Dongson man with war axe on his shultern as handle of a bronze dagger of 2300 years old.
Muong' weaving decoration with phoenix and dragon designs (Muong Textile Study)
The Pham Huy Thong Museum with it's laboratories in Yen Hung (Quang Ninh)
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