"Just Thirty" topped the rankings for more than 20 consecutive days because it was an excellent modern urban romance novel with the following characteristics that made it popular with the audience: 1. The plot is attractive: "Only Thirty" tells the story of the life and work of the three female protagonists in the city. The plot is full of ups and downs, and the plot is full of suspense and surprises. The audience is easily attracted into the story. 2. The characters in "Only Thirty" are very distinct. Each character has its own unique personality and experience, which makes it easier for the audience to resonate and emotionally invest. 3. Excellent production: The animation effects and picture quality of " Only Thirty " are excellent. At the same time, many modern elements and memes are incorporated to make it easier for the audience to understand and accept. 4. Outstanding performance of the actors: The cast of " Only Thirty " is strong. The performance of each character is very good. It can well interpret the character's personality and emotions, making the audience more easily infected by emotions. To sum up," Only Thirty " was able to reach the top of the list for more than 20 consecutive days because it had excellent plot, character image, production, actors, and other aspects. These factors combined to make it a modern urban romance novel that was loved by the audience.