Thủy Xá and Hỏa Xá

Thủy Xá (chữ Hán: 水舍, lit. "Water Haven") and Hỏa Xá (chữ Hán: 火舍, "Fire Haven") are Vietnamese names referring to two former Jarai chiefdoms located in Central Highlands of Vietnam. Their leaders used the title "King of Water" (Jarai: Pơtao Ia; Rade: Mtao Êa; Vietnamese: Thủy Vương; Khmer: Sdech Tưk ស្តេច​ទឹក; Laotian: Sadet nam ສະເດັດນ້ຳ), "King of Fire" (Jarai: Pơtao Apui; Rade: Mtao Pui; Vietnamese: Hỏa Vương; Khmer: Sdech Phlơng ស្តេច​ភ្លើង; Laotian: Sadet Fai ສະເດັດໄຟ) and the lesser-known "King of Wind" (Jarai: Pơtao Angin) respectively. The Jarai word Pơtao were often translated as "king" but were never real kings, actually they were ritual masters of fire, water and wind.

According to research, these tribes located in the valley of Ayun and Ba River, modern day Ayun Pa (a district in Gia Lai Province) and Ea Súp (a district in Đắk Lắk Province).

Water and Fire Kingdoms were descendants of Cham people. The two kings occupied themselves with magic and sorcery, bewitching the people. According to legend, King of Water could pray for rain, and King of Fire could pray for hot weather. Their sorcery were known by Cambodian. In order to pray for peace and prosperity, the Cambodian king offered sacrifices to the two tribes every three years.