According to Baidu Encyclopedia, "I heard that Wang Changling moved to Longbiao Kiln to the left" is a seven-character quatrain written by Li Bai, a poet in the Tang Dynasty. Seven-character quatrains are a genre of classical poetry, each sentence has only four sentences, and each sentence has seven words * * * 28 words. This poem was written by Li Bai for his friend Wang Changling's demotion, expressing his sympathy and concern for Wang Changling and cherishing and pinning his friendship. Images such as flowers, rules, bright moon and wind are used in the poem, which forms a beautiful picture and expresses the poet's deep affection.