Cheng Yi is a character in the TV series A Log. Cheng Yi actor Ren Zhipeng: He and Jiang Mufan have been classmates since primary school. He has a great talent and a great voice. Jiang Mufan actor Zhou Chuanjun: The family is superior but low-key, since primary school has been serving as a member of the study committee. Precocious in thought, but a little immature in emotion. Shao Tianyang actor Li Zhengjun: The Amoy boy of the class. Not very enthusiastic about learning, but with smart ability and unique charm, soon attracted a bunch of "younger brother". Cheng Yi appeared in the drama plot: Jiang Mufan, an excellent student with superior family, was admitted to the province's first high school - Green School. Secretly determined not to love him, but by chance met beautiful girl Lin Luoyan, also became a class. Among the students of Class 15 are Jiang Mufan's good friend Cheng Yi and many students with distinctive personalities. With Jiang Mufan character opposite "bad boy" Shao Tianyang, although always make the teacher headache, but soon surrounded by a bunch of "little brother". When the poetry recitation competition, the entertainment committee member Lin Luoyan found Jiang Mufan and her to draw the theme board newspaper, inadvertently, some small beauty seems to start flowing between each other...