Guo Qilin's performance in Give Me an Eighteen Years Old could be evaluated in the following aspects: 1. Plot performance: As the male lead, Guo Qilin's performance in the plot was recognized and praised by the audience. His mature and decisive way of dealing with emotional and growth problems showed the thinking and responsibility of an adult man. At the same time, he also showed his understanding and respect for feelings in the process of getting along with the female lead, allowing the audience to feel a real and warm character image. 2. Character Creation: Guo Qilin's male lead, Li Tianze, is a complex character. He has the innocence and innocence of a teenager and the thinking and responsibility of an adult. Through Guo Qilin's performance, the audience could deeply understand the inner world of this character and feel his growth and changes. At the same time, Guo Qilin's performance in character creation was also recognized by the scriptwriter and director. 3. Acting skills: Guo Qilin's acting skills are excellent. He can accurately grasp the emotions and psychological state of the character. Through the expression of his eyes, movements and language, the audience can deeply understand and feel the emotions and thoughts of the character. At the same time, he was also constantly improving his acting skills and performance ability, making a positive contribution to the character creation and the performance of the plot. To sum up, Guo Qilin's performance in Give Me an Eighteen Years Old was recognized and praised by the audience. He successfully presented a real, warm and responsible adult male image through excellent acting skills and character creation, making a positive contribution to the development of the plot and character creation.