The garden of the spring garden was built in the Qianlong period, located in the southeast of the Yuanmingyuan, originally became the Spring Harmony during the Qianlong period. In the 37 years of Qianlong, several small gardens in the southeast of the Yuanmingyuan were expanded to the Yuanchunyuan. The total construction area is54.3 hectares. The garden scale is slightly smaller than that of the Changchun Garden. The palace gate of Hunchun Garden, in the southeast of the garden, is called the new palace gate because the Great Palace Gate of the Yuanmingyuan and the Second Palace Gate of Changchun Garden were delayed for more than half a century.