Changchun comes from the ancient Sushen language "Cha A Chong" about 7,000 years ago. It is the prayer language used by Sushen in ancient times when offering sacrifices to heaven. Because the place of prayer is in Xidu, later generations gradually replaced Xidu (transliterated as "Changchun" in Chinese translation) with "Chaa Chong" and became the place name. Although the history of Chaah Chong predates Xidu by thousands of years, in fact, later generations confused it. Chaah Chong is the earliest classical historical name in Changchun. Now it means that the four seasons are like spring