The major cities of Lan Xang were located in Luang Prabang, Vientiane including the towns in Nong Khai, Muang Phuan, Muang Sa or Muang Champa Nakhon (Champassack), Nong Khai, Sikhottabong (which in later periods would become Thakhek, Nakhon Phanom, and Sakon Nakhon), and Xiang Hun(Jinghong) (later Muang Sing) in Sip Song Panna. These major cities were known as "muang" or "vieng" and were classified based on substantial fortifications and city walls, the Lao chronicles record five supporting cities, and ninety-seven border "muang."