Wangdue Tshechu is celebrated in Wangdue. The Tshechu is well known for the Raksha Mangcham or the dance of the Ox. It concludes with the unfurling of the Guru Tshengye Thongdrol.
Previously, the Wangduephodrang Tshechu was celebrated in the Wangduephodrang Dzong, since the destruction of the Dzong by fire in the year 2012, the festival is being held in the Royal Bhutan Army ground, located a few kilometers away from the town.
It is said that during the construction of a bridge across the Punatshangchhu river, all the foundations laid during the day time was destroyed at night by a mermaid. This carried on for a while until Zhabdrung introduced the Raksha Langgu chham in order to distract her. The mermaid, disguised as a ordinary human went to witness the dance, taking the chance people hurried their work and completed the construction of the bridge. In his regards the Raksha Langgu chham during the Wangdue Tshechhu is considered one of the most important and interesting mask dances performed.
Other Mask dances are also performed during the festival which deals with afterlife wandering souls and dances in paradise. Pa Chham is said to be the dance of paradise. The Pa Chham was introduced by Pema Lingpa, who had seen these dances while he visited the Paradise in his dream.