重阳节，也称为“踏秋”或“重九节”，是中国传统节日之一，通常在农历九月初九庆祝。以下是一个简单的英语介绍：

The Double Ninth Festival, also known as Chongyang Festival or the Ninth Day of the Ninth Month, is a traditional Chinese festival celebrated on the ninth day of the ninth lunar month. The festival holds special significance as it symbolizes climbing to higher ground to avoid misfortune. People often engage in outdoor activities, climb mountains, and enjoy chrysanthemum flowers during this time. It is also a time to pay respects to the elderly, highlighting the cultural importance of filial piety.