It is an annual religious festival that is celebrated on the tenth day of a month of the lunar Tibatan calendar. During the Tsechu, people wear their finest ghos (national dress for men) and kiras(for women) as shown in the photo attached below. Although ghos and kiras can have simpler patterns, people tend to wear ones with intricate patterns during special occasions.
It takes place at the dzong ( a distinctive fortified building that incorporates both administrative and monastic institutions found in Nepal and Bhutan characterised by massive towering external walls and a complex internal layout.) There are different dzongs in different district and each one of them has great cultural significance.
During tshechus, people dance and perform mask dances. Our music is really unique and there are multitude of mask dances too. I have a lot I’d love to share about if anyone is interested.