Conflicting impressions of Jiao Yan.
Made Chen Xiao suspicious of her.
The foundation of suspicion, aside from image issues, stems from the signals the killer sent out.
People have seven emotions and six desires.
In a murder case, many people's seven emotions and six desires are magnified infinitely.
Those magnified emotions are the basis for the police to seek their motive for committing the crime.
But when almost no emotional outburst is felt in a murder case, for the police, it's an indication of increased difficulty.
An emotionless case leaves the motive elusive.
While in the autopsy room, Chen Xiao thought of the word scenario.
He believed that since the killer was so familiar with the situation between Jiao Guoxuan and Qiao Zhiyuan, and from other details, he could see that the killer was familiar with the deceased's family.
This proves that before the case happened, the events between the Jiao Family and Qiao Family might have involved him multiple times.
