The Administrative Districts ("yul sde" or also "yul dpon tshan") are presented as territorial units separate from the thousand districts ("stong sde"). Their nature is still unclear, although Uebach[1] proposes to see them as units of five hundred households comprising one half of a thousand district. Yul sde are believed to have existed at the same time as the stong sde during the 8th and 9th centuries.

[1] p999-1001 of : Uebach, H., 1994. Small units in the territorial division of the Tibetan Empire (7th - 9th century). In Kvaerne, P. (ed.) Tibetan Studies: Proceedings of the 6th Seminar of the International Association for Tibetan Studies Fagernes 1992. Oslo: Institute for Comparative Research in Human Culture, 997-1003