 They lived mostly a nomadic life spending hardly one or two generation at a certain place of settlement as a village for want of more land for cultivation to meet the growing need of food and other means of sustenance.At other times, the entire population was compelled to abandon their village and shift to a safer place to avoid plague and epidemic diseases or as victims of constant head hunting amongst the neighboring villages etc.The route of migration of the Yimchungers from Thailand came through Burma (Myanmar), then from Burma to Moru (in India) and from Moru to Chiru, from Chiru to Longyang to Thunyim kiulong (literally Thunyim means fifty and Kiulong means village) - thus village of fifty (within the Indian territory).