The three sites of Laosicheng, Tangya and the Hailongtun Fortress combine as a serial property to represent this system of governance. The archaeological sites and standing remains of Laosicheng Tusi Domain and Hailongtun Fortress represent domains of highest ranking Tusi; the Memorial Archway and remains of the Administration Area, boundary walls, drainage ditches and tombs at Tangya Tusi Domain represent the domain of a lower ranked Tusi. Criterion (ii): Tusi sites of Laosicheng, Tangya and the Hailongtun Fortress clearly exhibit the interchange of human values between local ethnic cultures of Southwest China, and national identity expressed through the structures of the central government. Laosicheng and Tangya Tusi sites are within designated National/Provincial Scenic Areas and protected by the Regulations on Scenic Areas 2006. Management of the three component parts is co-ordinated at the provincial level under the State Administration of Cultural Heritage (SACH) by a steering group created by the Joint Agreement Concerning Protection and Management of Tusi Sites.