Yakthung Limbu Culture is so rich both in terms of its developmental aspects, its meaning and valule. Yakthung Paan Limbu language is one of the most primitive language all over the world. Only the reason to prove that is about its Mundhum the holy scripture based on oral traditions that Yakthungs do know as insight book or Sik Sapla. It always starts from its naught point i.e. before the creation of the universe and the Earth. Language is so unique and great that we can prove from its highly developed form of linguistic richness. It reaches to the bottom of the feelings and height of the feelings. It is also regarded as a science because it always advocates how artistically and logically the Universe, the Earth was made by Porokmiba Yambhamiba seems like a particular scientist like albert einstein and some other physisists.