Teeji or Tiji festival is an annual event indigenous to Lo-Manthang (Upper Mustang). The name is an abbreviation of the word "Tempa Chirim" which translates as "Prayer for World Peace". This festival commemorates the victory of Lord Buddha's incarnation "Dorjee Sonnu" over a demon called Man Tam Ru a vicious creature feeding on human beings and causing storms and droughts. The Teeji festival usually takes place during the last week of May and lasts for 3 days. Dances performed by the monks of Lo Manthang's "choedhe" monastery during the celebration display. The harassment of Ma Tam Ru Ta (in a dance called "Tsa Chham" on the first day), the birth of Dorjee Sonnu as the demon's son (on the second day called "Nga Chham"), the attempt to return the demon to lord Buddha's realm (on the third and final day). The Teeji festival dances are all organized by the Choedhe Monastery which is that of the Sakya sect of
Lo Manthang. The monastery abbot is Khempo Tasi Tenzing Rimpoche. Altogether about 65 monks from Lo Manthang, Nhenyul and Chhosyer live in the monastery.
Every year May/June month Mustang Tiji festival is performed at Lo Manthang.