I examined the corpse and determined that the time of death was between nine to ten hours ago, which was consistent with the bartender’s statement.

I detected the smell of cigarettes and alcohol on the victim’s body. I then used Organ Echolocation and found that all her internal organs were in normal condition except her lungs, which were especially hardened.

I noticed yellow burnt marks on the victim’s fingers and remarked, “The victim had a habit of smoking cigarettes. Her lung fibers are practically rock hard!”

“Yes,” Xiaotao nodded. “According to her friends, she’s a chain smoker and she usually smoked about thirty cigarettes a day.”

“Wow!” cried Bingxin. “Your ears are even more sensitive than X-rays, Song Yang-gege!”

I briefly explained the principles of Organ Echolocation to her and she was both fascinated and impressed by it.

There were stains on the victim’s...