Festivals
The central activity is a fixed set of religious mask dances, or Cham, held in a large courtyard. Each individual dance takes up to several hours to complete and the entire set may last 2 to 4 days. Observation of the dances directly blesses the audience and also serves to transmit principles of Tantric Buddhism to the viewers. A number of the dances can be traced directly back to Zhabdrung Ngawang Namgyal himself, the founder of Bhutan, and have been passed down essentially unchanged since the mid-1600s.
Prior to dawn on the final day of the tsechu a huge tapestry, or Thongdrel, is unfurled in the courtyard of the dzong for several hours. The mere sight of it is believed to bring spiritual liberation. The Thongdrel is rolled up before the rays of the morning sun can strike it.