1. "A bird flies"
There was a Chen Sheren in Bianjing, Northern Song Dynasty, who accidentally got an old copy of Du Fu's Poems, and he was a treasure. However, due to the poor preservation of this book, many words in the poems fell off. Once, when Chen Sheren read Poems for a Captain Cai, he found that. I still can't tell what word it is.
One day, when he was talking with some poetry friends, he raised this question, hoping that everyone could make up the most appropriate word. Some people wrote the word "disease", thinking that the word "disease" can best express Cai Duwei's brisk and rapid vertical dancing kung fu. Some people think it's not good, because "a bird is light, but a gun is urgent." It seems a bit repetitive. Some people wrote the word "degree", but Chen Sheren thought it was too blunt to use it here, and it didn't show the characteristics of being as light as a bird. Some people even suggested using the words "fall", "rise" and "fall", but everyone was dissatisfied.
Later, Chen Sheren found a relatively complete Collection of Poems of Du Fu elsewhere.