C38

"Only DNA testing can determine the source of blood. Why did the defendant not see the bloodstains on the deck of the ship being washed with water when he returned from Bird Island to the town of Jeju? This was because he had never thought that there was such a huge conspiracy hidden inside the boat. The owner of the boat could see it because he had to check to see if anything was missing from the ship after the customer had handed in the boat. That was why the shipowner had been so careful. When he found out that the deck wasn't right, and then discovered that there was a corpse under the cabin, he quietly reported the case. In fact, the defendant had no idea. If he did kill someone, would he stay in Ji Kou town and not leave as soon as possible? The defendant was upset because he had lost a thousand dollars at cards and was immediately faced with the prospect of having his gambling debts reclaimed when he returned home. He didn't want his parents to know, so he looked anxious and flustered. I don't know if the prosecutor noticed the fact that there was no blood at the bottom of the cabin where the body had been hidden. If the victim was killed on board the ship, she should have been quickly hidden under the cabin. How could there not be traces of blood on the floor of the cabin? "

"According to your entomological evidence, the victim was already dead before she entered the island. How could she have entered the island with the defendant alive?"

"As I said, this is only the result of imitation experiments. The reality may be more complex. "Also …"

Shen Yuan's tone turned serious, "I suspect that the victim might not be Su Heshan."

The courtroom was in an uproar.

"Silence."

The presiding judge slapped the dust off his face, "Public Security Examiner, please come on stage."

"According to our results, the DNA of the blood on the ship's deck does not match the DNA of the deceased. "However …"

The police surgeon looked at the confident Shen Yuan and said, "The victim's DNA is the same as Su Heshan's mother's."

"Expert Shen, do you still think that Su Heshan's identity is fake?"

The prosecutor had a faint smile on his face.

Shen Yuan did not answer immediately. Instead, he calmly typed out a photo on the projection map. A clear picture of a person was lying on the stone slab.

"Chemically there is a substance called luminescent ammonia, which can be used to identify scrubbed, long-ago bloodstains. Because iron in human blood makes it emit a faint but visible green glow. "

Shen Yuan pointed to the picture and said, "This is a picture of Ding Wei spraying luminescent ammonia on a certain spot in the cave and using long-exposure photography. What did it say? The location of the murder victim. When the wrench struck the victim in the back of the head, blood flowed from the wound, forming an outline where the body lay. Although scrubbed, a small amount of residue can still be identified. From this, it could be determined that the victim was killed in the cave. Whether the victim was Su Heshan or not, it didn't affect our scientific judgment to rule out the murder of Yang Wen. In order to kill his victims in the cave, he had to lure them into the cave. On the day of the incident, the three friends who were with him had confirmed that Yangwen had been on Bird Island until 5 PM. In other words, if YANG Wen killed Su Heshan after five o'clock in the afternoon, according to entomological evidence, the time of death would result in a serious discrepancy between the time of death and the time of actual death. There is also no evidence that Yangwen left the island to go to the cave on the day of the incident. "