Jack created a case through Interpol and then investigated the professor's family. The person happened to be an American, so it was easy to investigate. Ying Zhen had always been fighting with people from China, so he didn't expect someone like Jack to come to arrest them personally.
It took a lot of time to investigate their families. The professor's family disappeared without a trace. No one knew where they went or if something had happened to them. It was fine if one of them was alone, but the other professor's son had just graduated from college and was about to get married. It was suspicious that this person had disappeared.
Ying Zhen asked,"is the Interpol investigating them?"
"Yes, I think it's because of a traffic case." Ying Zhen answered,"he's just under investigation and needs to take a statement. Now that he's missing, he's a suspect. The Interpol might investigate this matter thoroughly if they want to arrest him."
