Ali-Ai-Ligang, the spring festival of the Mishing Tribe of Assam, is the most colourful festival of the Mishing held every year on the first Wednesday (Ligange Lange) of the month of Ginmur Polo (February-March). Mishing's Bihu can be seen in North Eastern part of Assam i.e. Sonitpur and Lakhimpur districts.

Ali means root, seed; Ai means fruit and Ligang means sow. That is why ceremonial sowing of paddy starts on this day. A dance is performed by the young boys and girls, characterized by brisk stepping, flinging and flapping of hands and swaying of hips reflecting youthful passion. 

Poro Aapong or rice beer, Pork and dried fish is essential for the feast. The festival continues for five days and during this festival certain taboos with respect to the cutting of trees, fishing, ploughing, burning jungles etc. are strictly observed.