The narrator explains that he is helping the doctor because he wants to cooperate with him. When he was younger, he was thought to be an orphan, but when he received an email from his brother, he realized that he was his brother. His mother tried for many years to find him, but she died of depression. The last time he received a letter from his mother was a month ago, when he noticed something wrong with her. The narrator says that he can't tell his brother that his heart is in his body, but he can tell that he has some blackmail in li bai's hands. He says that if you don't want to be like his brother and end up like him, he advises you to be too distant from him. He adds that he knows that he likes to manipulate people with emotion, and this is why he's attracted to the doctor. If it's to ruin rebirth, the narrator says, he'll spare no efforts to cooperate. He's been doing another secret experiment, but the medical experts they sent have been found. He wants to know what's going on. When they found the doctor and the director, the monitoring system was broken, so they couldn't find out what was going on