The inscription on Liquan in Jiuchenggong describes the origin of Jiuchenggong and the grandeur of its architecture, praises the martial arts and frugality of Emperor Taizong, introduces the discovery of Liquan in Miyagi, and quotes ancient books to explain that the emergence of Liquan was caused by "the son of heaven made virtue". Finally, the warning of "aim high, persevere and avoid surplus" is put forward.
Research value:
The inscription of Liquan in Jiucheng Palace is not only a calligraphy inscription, but also records Li Shimin's exposition on how to govern the country when he was far away from Jiucheng Palace, which made people believe in the government and formulated the political strategy of "making great efforts to govern the country". The construction of Jiucheng Palace also reflects the architectural policy and design concept during Zhenguan period.