Significance:  Cửa Ông Temple is dedicated to Trần Quốc Tảng, the third son of Trân Hưng Ðạo, who defeated many enemies and brought peace to the region. Hoàng Câu, a local general who fought bravely against invaders, is also honoured here. The festival dedicates to the merit of  Trần Quốc Tảng and other Generals of Trân Dynasty.

Cửa Ông Temple is one of the famous Trân Dynasty vestiges of the northeast region. The temple has three areas: low, middle and high, facing the majestic Bái Tu Long Bay. During the war, the middle and lower temples were both destroyed, but today the low temple has been restored.

Formerly, locals organized the main festivity  on the second day of the third lunar month. There were grand cult ceremonies, and a palanquin procession carrying Trần Quốc Tảng’s funeral tablets from the temple to a shrine in Trác Chân Commune. Legend has it that this was the place where Trần Quốc Tảng’s ashes drifted after being dispersed on the river. The procession would then proceed back to the temple, symbolizing the inspection tour of Trần Quốc Tảng (called Ðức Ông).