An ancient place name in Xinjiang, referring to the Yaochi Protectorate-general 瑶池都护府 yáo​chí​dū​hù​fǔ established during the Tang Dynasty in modern-day Fukang

(old) title for high-ranking military and administrative officials stationed in border regions, such as the protector-general of the Western Regions during the Han dynasty or the heads of the six major protectorates during the Tang dynasty

(bound form) seat of government; government office; administrative department