(2) "Mamba" sentence: The moon sprinkled clear light on the jade railing as if to protect it.

(3) Two sentences in Heaven: Chen Shidao's Poem on the Back Hill records that in the Southern Tang Dynasty, Song Taizu and Zhao Kuangyin read the poem "Singing the Moon" written before he became a nobleman to Xu Xuan. Xu Xuan read the sentence "It's not until it's dark at the bottom of the sea in Qian Shan that he can reach the countries of Zhongtian", and thought it was an omen of the emperor, which was greatly appreciated. Jia Yucun's poems were modeled after this work, so Zhen Yinshi praised him: "I have seen signs of soaring today."