The Limbu language is one of the few Sino-Tibetan languages of the Central Himalayas to possess their own scripts. tells us that the Limbu or Sirijunga script was devised during the period of Buddhist expansion in Sikkim in the early 18th century when Limbuwan still constituted part of Sikkimese territory. The Limbu script was probably composed at roughly the same time as the Lepcha script which was created by the third King of Sikkim, Chakdor Namgyal (ca. 1700-1717). The Limbu script is ascribed to the Limbu hero, Te-ongsi Sirijunga Xin Thebe.