Li Rui, the actor of "Ding Kaile" in the first part of Happy Planet, has won the audience's love with his handsome appearance and extremely talented acting skills, and is the "childhood male god" of many people.

In the play, Ding Kaile, played by Li Rui, is weak but smart and kind, and occasionally crosses time and space to "Happy Planet" and becomes partners with three children there. It is precisely because of knowing them that Lele changed its image of cowardice and became more and more confident. Lele, who was not interested in learning in the past, began to feel the importance of knowledge, learned from polyhedron and fell in love with invention.

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With his outstanding performance in Happy Planet, Li Rui became a hit, and after he became famous, he also made a guest appearance in the second film. However, just when everyone thought that he would continue to develop in the entertainment circle, Li Rui slowly faded out of the entertainment circle and became an ordinary student.

Li Rui, who doesn't like studying in the play, is a veritable top student in reality. He was among the best in school and published a book called Happy I Be the Master. In the book, Li Rui tells the interesting stories during his filming of Happy Planet, and his writing is concise.

Reference to the above content: Baidu Encyclopedia-Ding Kaile