Within the framework of the cooperation agreement between the Vietnam National Museum of History and Dak Lak Museum, the two museums have coordinated to research and conduct archaeological excavations at Thac Hai relic (Hamlet 6, Ia Jloi commune, Ea Sup district, Dak Lak province), period 2021 - 2023. In addition, the preservation and restoration of archaeological objetcs after excavations for the purpose of propaganda, education and exhibition is also an important content of this agreement.