Holiday in Hanoi is a popular celebration in Vietnam, which is celebrated on the first day of the Lunar New Year. The holiday is also known as TET, an abbreviation for the Vietnamese phrase 'Tết Nguyên Đán', which translates to 'Feast of the First Morning of the First Day'. During this time, people gather to celebrate with traditional activities such as dragon and lion dances, fireworks, and special foods. It is a time for families to come together and honor their ancestors.