during the reigns of nongda lairen pakhangba in the 1st century ad, his younger sister named "panthoibi", established the "ametpa loishang" (). the loishang () used to perform the treatment and the diagnosis of diseases and sicknesses, including boils, abscesses, ulcers, etc. "laibi", a post in that office, supervised the procedures. "metpi"s used to perform delivery and child birth. "metpi laibi"s were responsible for the treatment of diseases for the queen and other imperial consorts. "metpi laibi"s always used to accompany the king wherever he went, by bringing medical tools and medicines. the text "loishangi thouram thougal" mentioned about the duties of the loishang and the "laibi". the text "masil" (also spelled as "masin", ) mentioned about the "metpi"s and the "metpi laibi"s.