What does it mean to count backwards from four to nine?

April 9 is the winter solstice solar term, marking the beginning of cold weather. The solar term from the winter solstice is the starting point of the Lunar New Year. It is believed that the solar term from winter solstice marks the official start of winter and is also a cold time in cold winter. During the winter solstice and solar terms, traditional activities will be carried out, such as eating jiaozi, glutinous rice balls and rice cakes, to pray for peace and happiness in the coming year. The countdown on April 9 means the end of the countdown, the end of the winter solstice and the beginning of spring.