The Space of Gong culture in Central Highlands of Vietnam covers 5 (1) provinces of Kon Tum, Gia Lai, Daklak, DakNong and Lam Dong. The masters of Gong Culture are the ethnic groups of Ba Na, Xo Dang, and M’Nong, etc. The Gong performances are always (2) closely tied to community cultural rituals and ceremonies of the ethnic groups in Central Highlands. Many researchers (3) have classified Gongs as ceremonial musical instruments. The Gongs are made of a (4) mixture of brass and gold, silver, and bronze. In most ethnic groups, only males are allowed to play Gongs. However, in others, such (5) as Ma and M’Nong groups, both males and females can play Gongs. In a few ethnic groups, Gongs are performed by women only.