"Pillow on the Book" had more than 5 billion views. There were several reasons why the number of views was so high: 1. Excellent production level: Pillow on the Book is an excellent fantasy drama. The production team spent a lot of effort on the scenes, special effects, costumes, etc., making the visual effects of the play very outstanding and attracting a large number of viewers. 2. Outstanding performance of the lead actor: The cast of the play is strong, especially the acting skills of the lead actors Dilareba, Li Qin and others. Their outstanding performance has won the audience's love and promoted the play's broadcast volume. 3. The plot is attractive: Pillow Book is a romance drama full of fantasy elements. The plot is exciting and the ups and downs of the plot attract the interest of many viewers. 4. Promotion effect of the platform: "Pillow Book" has a large number of fans on multiple platforms. The platform has effectively promoted it, which has increased the number of plays on the platform. To sum up, the reason why "Pillow on the Book" had more than five billion views was due to its excellent production level, outstanding performance of the leading actors, attractive plot, and the promotion effect of the platform.