In the conference room, Sun Lei’s mother cried, “Our Sun Lei has always been an obedient child. He cried for a long time even when the pigeons we were raising at home died. He joined the army after graduating from high school. He has basically always been in the army. He didn't have any social contacts, so I really don't know who would be so cruel as to attack him viciously like this." Sun Lei's father consoled her while looking sad himself.

Chen Shi said, "We want to know more about the situation, it would be helpful for solving the case. Has Sun Lei been to the hospital recently?"

Chen Shi felt that if the liver had been removed for transplantation, then the murderer must know his medical information.

Sun Lei's mother recalled, "Their army has a hospital, and they usually see the doctors there."

"What about previously? Has he ever been hospitalized prior...