The Hanoi Celebration is an annual event held in Vietnam to commemorate the liberation of the city from French colonial rule. The celebration is marked by a variety of activities, including parades, fireworks, and traditional music and dance performances. The term 'TET' is used to refer to the Vietnamese New Year, which is celebrated during the Hanoi Celebration. TET is an abbreviation for the Vietnamese phrase 'Tết Nguyên Đán', which translates to 'Feast of the First Morning'.