Here's a clip from "Pipa Concerto: Luckiness and Eternity," played by the China National Traditional Orchestra. The concerto breaks through the confines of traditional music and paints the joy experienced by the humorous and open-minded people of northern China during Dongzhi, a festival to mark the Winter Solstice. According to a Chinese saying, "Dongzhi is as significant as the Spring Festival." It can be dated back to the Zhou Dynasty (1046 B.C.-256 B.C.), when the ancient Chinese celebrated the day as the beginning of a new year.