The tree that is put in the hearth was cut in June, in the month of the celebration of Urs Sar. Urs Sar is a time of prosperity, abundance, and continuation of life, when cattle graze on green pastures and there is a lot of milk to go around for nomads. During the celebrations a tree is placed in the center of the yurt to symbolize the binding of life. Ribbons are tied on the tree to worship the spirits of the earth and nature. The tree is a symbol of life and is connected with the centre of the world. Kalmyk New Year is called Zul. It is a time when Tsagan Aav (Zhilin ezn), or the Master of Time, sets out on a journey.