How did Kipat system encroach on the identity of Yakthung Limbu?

Introduction to Yakthung/Limbu/Limbuwan: Yakthung Limbus are densely populated between the Arun and Tamor rivers in the far east of Nepal.

The civilization of the Yakthung Limbu grew in the vicinity of the Kumbhakarna/Phaktanglung, Kanchanjangha/Kelangsitlang, Tokpegola/Singshaden mountains, and it flows along with the rivers: Tamor Khola/embiri yangthangwa, Ghunsa Khola/mudhingum lekwawama, Miwa Khola/kettakum miKwa, Maiwa Khola/Sindholung Maiwa, Fawa Khola/Yafa/Lung Fawa, Kabeli Khola/muganglung kangwa, Tawa, Ingwa, Sabhawa, Hengwa, Piluwa, etc.