What is the movie Adventure of the Twelve Constellations? After reading it, I have no idea what it means.

Because an accident happened when I was a child, Xiaoyu was killed, and my childhood partner, the heroine Tang Lin, had psychological disorder, which is the main reason for the formation of dual personality. However, Chen Wei, the leading actor, felt that Xiaoyu's failure to be saved at that time was his own fault, which caused psychological defects and was often blamed by his conscience. Because of this, several other playmates don't want to meet again when they grow up, and everyone goes their separate ways. Later, Tang Lin became an author, and a novel named Tang Lin appeared on the market. The characters in the book are named after Tang Lin and her childhood playmates, but the story content is consistent with their real experiences, and like a curse, people in real life die unexpectedly in the order described in the book. First, Cui Miao in Scorpio, then Chen Xiaofeng in Libra ... Later, it was discovered that the truth of the matter was just a "ghost" in people's minds, because I lied about my fabricated illusion. This also reflects from another side that the shadow of childhood can affect people's life. But in the end, I still don't quite understand, for example, in the film, Xiaoyu, who finally appeared, is real or just an illusion. I don't know what happened to Zhou Kang's leg. The above is just my own understanding, please forgive me for the unknown, and hope to adopt it. Thank you.