Time: From the 9th to the 11th day of the third lunar month, the main festival day is on the 10th day of the third lunar month.
Objects of worship: King Dinh Tien Hoang and King Le Dai Hanh.
Place: Truong Yen Commune, Hoa Lu District, NinhBinhProvince.
Characteristics: The procession of water, Chinese character forming.

The two most solemn rituals of the festival are the water procession and sacrifices - offering ceremony.

The sacrifices - offering ceremonies take place at midnight in Dinh and Le temples at the same time. The funeral oration is divided into nine parts praising the contributions of the two kings. It is expressed in a lively tru (a traditional type of singing) melody. As soon as it finishes, the boat carrying water arrives. Pilgrims take turns in presenting incense sticks to pay tribute to the kings and visit ancient sculptural and architectural items

Visitors can participate in many folk games, cultural, tourist and sports activities such as wrestling, boat racing, swings, chau van (a traditional type of music) singing, poem critique, poem writing, Chinese character forming, stick dancing, dragon dancing, unicorn dancing, or human chess.

The most special about the Truong Yen Festival is a game called " maneuver game with reed flag", which replays the childhood of Dinh Bo Linh as a buffalo boy in Truong Yen.

Coming to the festival is an opportunity for visitors to visit the ancient capital of the Dinh and Le courts, which mark the glorious period of unifying and establishing the country after suffering more than a thousand years under Northern Domination.