div ision ▁of ▁Per en ▁district ▁of ▁Nag aland ▁state , ▁and ▁T ame i ▁town , ▁sub - div ision ▁of ▁Tam eng long ▁district ▁of ▁Man ip ur ▁state . ▁ ▁Tri be ▁recognition ▁ ▁Li ang mai , ▁as ▁a ▁separate ▁tribe ▁in ▁Man ip ur ▁state , ▁was ▁recognized ▁by ▁the ▁Government ▁of ▁India ▁on ▁ 2 2 ▁December ▁ 2 0 1 1 . ▁ ▁Origin ▁The ▁Li ang mai ▁is ▁one ▁of ▁the ▁tribes ▁of ▁N ortheast ▁India , ▁part ▁of ▁the ▁Ham ai ▁group ▁in ▁specific ▁and ▁the ▁Nag as ▁in ▁general . ▁Origin ally , ▁Li ang ma is ▁are ▁from ▁Mong ol ian ▁region ▁( Not ▁necessarily ▁from ▁present ▁Mong olia ). ▁They ▁began ▁their ▁migration ▁from ▁Mong olia ▁somewhere ▁around ▁ 7 th ▁century ▁BC , ▁before ▁or ▁during ▁the ▁early ▁construction ▁of ▁Great ▁Wall ▁of ▁China ▁in ▁China - M ong olia ▁borders . ▁However , ▁there ▁was ▁no ▁written ▁source ▁to ▁prove ▁their ▁dispers ions , ▁movements , ▁and ▁journey ▁from ▁Mong olia . ▁One ▁has ▁to ▁completely ▁base ▁on ▁or al ▁tradition ▁to ▁re - construct ▁their ▁history . ▁It ▁is ▁believed ▁that ▁there ▁were ▁different ▁waves ▁of ▁migration ▁from ▁Mong olia ▁and ▁sp anning ▁hundreds ▁of ▁years . ▁After ▁their ▁dispers ions ▁from ▁Mong olia , ▁different ▁groups ▁moved ▁into ▁different ▁directions , ▁settled ▁in ▁one ▁areas ▁or ▁another ▁for ▁long ▁years ▁before ▁their ▁next ▁moved . ▁Some ▁of ▁them ▁reached ▁the ▁South - e astern ▁Asian ▁regions ▁which