Mr. Joseph F. Rock first disclosed this place to the West in National Geographic July 1931, later in the "Lost Horizon" written by James Hilton, Shangri-La being well known.
Ya Ding Reservation Park located Longitude 99d 58' to 100d 28' East, Latitude 28d 11' to 28d 34' North, area 1,344sq km.
One summit at 6,032m, 10 summits above 5,000m, 32 summits above 4,500m, 62 alpine lakes and traveling altitude from 3,700m to 4,800m.