"I heard that Wang Changling moved to the left and I sent this message to Longbiao Yaoyuan" is a poem written by Li Bai, a great poet of the Tang Dynasty, to express his anger and comfort for his friend Wang Changling who was demoted. The first sentence describes the depressed situation when spring fades, exaggerating the bleakness and sadness of the environment; the second sentence describes Wang Changling's "left migration" and the dangerous journey to take office, showing Li Bai's concern and sympathy for the exile of his poet friend; the third sentence , four or two sentences convey feelings to the scene, and offer heartfelt encouragement and comfort to the poet friends. The whole poem uses images such as poplar flowers, Zigui, the bright moon, and the wind, and uses unique imagination to weave a hazy dream. Through the description of the scenery, it expresses the author's regret and sympathy for Wang Changling's unappreciated talent.