The Double Ninth Festival, also known as the Chongyang Festival, is a traditional Chinese festival celebrated on the ninth day of the ninth lunar month. It is a day to pay respects to the elderly and climb mountains for good luck. The festival has a history of over 2,000 years and is recognized by the Chinese government as a public holiday. On this day, people often eat chongyang cake, drink chrysanthemum wine, and wear cornel twigs to ward off evil spirits. The Double Ninth Festival is not only a time to celebrate the autumn harvest but also a time to show gratitude towards the elderly and cherish their wisdom and experience.