Doan Ngo is one of Vietnam’s major traditional festivals, celebrated annually on the 5th day of the 5th lunar month. It is also known as "Doan Duong" or the "Pest Killing Festival." Although not associated with any particular deity, the festival holds deep spiritual significance in the Vietnamese people's life. People make offerings to their ancestors and traditional deities, using simple items such as fermented sticky rice (ruou nep), "ash cake" (banh tro), summer fruits, incense, tea, and flowers.