1. Jiang Lang means that Jiang Lang's literary talent has disappeared and his metaphorical talent has declined. Jiang Lang's literary talent originally meant that Jiang Yan had few literary titles and no good poems in his later years, which later meant that people's literary talent and thoughts declined.

2. Jiang Lang is an idiom. From "Biography of Heather River Flooding"

3. Idioms and allusions

Jiang Yan, a writer in the Southern Dynasties, was born in a poor family, studied hard since childhood, and wrote well. He is called Jiang Lang. When writing poems, Jiang Lang was full of literary thoughts, often using strange words and beautiful sentences, and gradually became a famous writer. Jiang Lang was the magistrate of Xuancheng. When he left his post and went home, he stopped at the Zen Temple. At night, he dreamed that a man who claimed to be Zhang Jingyang said, "I sent you a piece of brocade before, and now it's time to return it to me."

Jiang Yan then took out a few feet of brocade from her pocket. The man was very angry and said that he had cut the brocade almost. While complaining, Zhang Jingyang saw Qiu Chi (a scholar at that time) standing by and said to Qiu Chi, "There is nothing to do, so I'll leave it to you."

On another occasion, Jiang Yan had a lunch break in the pavilion, and dreamed that a man who claimed to be Guo Pu said to him, "My pen has been with you for many years, and now it's time to return it to me." Jiang Yan immediately touched his arm and took out a five-color pen, so he gave it back to Guo Pu. After these two strange dreams, Jiang Yan began to write poems, and there were no more famous sayings.