1. When the police first saw Xuesui, she was reading Gone with the Wind. A year later, when the police went to Tong Yuan's house to investigate Liang Si, they found that Liang Sigang had borrowed the book from the library. Dongye hinted at the connection between the two people through this book, but this one year later pointed out an important message, that is, Xuesui is more precocious than Liangsi, and she is the real leader of all events, and Liangsi is just a follower.

2. There is another detail, that is, in the death room where Chinese characters are studied. That night, in front of a corpse, what Xue Sui and Liang Si did was really cold to the bone. Such a plot is only found in books written by Japanese.

3. Tomihiko Murakami's programming ability saved his life. When he confessed his ambiguous relationship with Xizi and finally lost his life with Ryoji, Ryoji made a serious threat to him. However, when he inadvertently revealed his computer and let Ryoji discover his special abilities, Ryoji immediately decided that Zhiyan had important use value.

4. Motorcycles in Kirihara Ryouji. On the night of Xi Zi's death, that is, the second Tuesday in July, Tomihiko was surprised to find that Ryoji came to his house on a motorcycle. Why did Ryoji buy a motorcycle? Because he wants to take Mr. Zhengqing's game tape from Xuesui's home to the small apartment as soon as possible to tear it up.

The two children took the money after murdering Tong Yuan, which was the starting capital of their evil career. However, a year later, when her mother died, Xuesui was still wearing tattered clothes and skirts, and her shoes were worn out. It was not until six years later that the money was settled with four personal computers and a dozen other machines in Yoshiko Yura Si Apartment. These two children have great self-control!