The Yimchungrüs celebrate Metumniu festival from 4^th to 8^th August every year after the harvest of millet. This festival is connected with the prayers for the souls of the departed ones. It is sentimental ceremony for those dear ones who left for heavenly abode during the year. An elder known as "KHEAMPURU" after due prayers inaugurates the festival. The festival is spread over for five days, which has its separate names of the days viz. SHITO, ZHIHTO, ZUMTO, KHEHRESUK, and SHERESUK.

On the first day the village is cleaned by community efforts, the damage roads and homes by the heavy rains are repaired. On the second day the path leading to the field are put in right shape, land slides which are very common during heavy rains are cleaned. Unwieldy growths are also cut. On the third day inter-village roads are taken up. On the fourth day water points and springs are cleaned giving a new look to the village and its surrounding. The villagers enjoy their millet. Friends are invited, gifts are exchanged. They dance in their finest and go round the village to charm young and old.

As the festival has a strong Agricultural base, the Agricultural implements are sharpened and worshipped the three important things such as Spade, Dao and Hoe.

During Metumniu festival the young boys and girls are engaged and those already betrothed exchange presents for new born babies. Special prayers are held and offering are made if the child happens to be male. The parents offer six pieces of meat to the Priest, and if the child happens to be female parents offer five pieces of meat. This signifies that the male has six souls and female five.

TSUNGKAMNIÜ

The Tsungkamniü another important festival of Yimchungrüs fall in the month of January 14^th to 16^th every year. This festival is observed to signify the year long life and harvest achieved during the long hard works in the field.

During this festival the young men and women of the village gathered together and go round dancing every house of the village in merriment. In turn every household provide meat, wine and rice cooked kept ready for them. This procession would go round the entire village and complete within stipulated time. The first day in the morning is spent for cleaning the village and thereafter eating, drinking and dancing starts.