What is the Double Ninth Festival in Qingdao?

Double Ninth Festival, also known as Double Ninth Festival, Sunbathing Autumn Festival and "Treading Autumn", is a traditional festival in China. Celebrating the Double Ninth Festival generally includes activities such as traveling to enjoy autumn, climbing high and looking far, watching chrysanthemums, planting dogwood all over, eating double ninth cake and drinking chrysanthemum wine. Every year, the ninth day of the ninth lunar month, together with New Year's Eve, Tomb-Sweeping Day and Zhongyuan Festival, is called the four traditional ancestor worship festivals in China.