Pan Yuansheng. In Chen Dong's novel The Best of Us, Pan Yuansheng is the dean and teaching teacher of Geng Geng and Yu Huai. He is upright and always considers the students, and is an excellent teacher. This article tells the story of how the difficulty of the high school entrance examination was lowered that year due to SARS. This gave a girl Geng Geng (played by Tan Songyun), whose grades were not outstanding, a taste of the sweetness and was accidentally admitted to Zhenhua High School, a key school.