"The former name of Qianlong Palace was Shetang. When Shou Wang (later Zhenzong) was appointed to Kaifeng Mansion, his father Taizong ordered the construction of Shetang in the east of Kaifeng Mansion as a place for Shou Wang to practice archery. Later, after Shou Wang Zhao Heng became emperor, he visited the Shetang of Kaifeng Mansion. After that, Song Renzong (Zhenzong's son), the real Zong Ren Kaifeng Mansion office, lived in the house of the Qianlong Palace, this historical fact is detailed in Song Dynasty Li Yan's "Renewing Capital and Zhitong Jian Chang Bian" volume 189.