Wear a pure cotton T-shirt, coat and jeans in Rushan on May Day. Because the average temperature during May Day in Rushan is 13℃-22℃, and it is 22℃ during the day. It is 13℃ at night. You can wear T-shirts and jeans during the day and a coat to keep warm after the temperature drops at night. Rushan City, which belongs to Weihai City, Shandong Province, is named after the "Darushan" in China, and is located in the hinterland of Qingdao, Weihai and Yantai. South of the Yellow Sea, and South Korea, Japan across the sea.