The traditional Shoton (Sour Milk Drinking) Festival falls on the first day of the seventh Tibetan month, lasting two or three days. During the festival, almost all the residents in Lhasa go to the Zhaibung Monastery with sour milk, milk products, butter tea, highland barley wine and delicious delicacies to appreciate the huge portrait of Buddha and enjoy the performance of Tibetan plays. The professional or amateur Tibetan play troupes from various places also go to the monastery to give performance. In the picture, the audience were watching the traditional Tibetan play Prince Norsang (1987)