Among them, Yu Shinan's Cicada is a five-character quatrain, Luo's Political Prisoner Listening to Cicada and Li Shangyin's Cicada are all five-character quatrains.
These three poems are all expressions of ambition, but their ideas are different and each has its own merits.
Yu Shinan's Cicada describes the lofty and noble character of Cicada. Luo's Political Prisoner Listening to Cicada expresses his desire for freedom and helplessness to the predicament. Li Shangyin's Cicada shows his feelings for the lost time and cherishes his life. These three poems are all classics in the history of China literature and have been widely praised.