Coming out of the office building of the model team, Zhang Tiejun looked at Wang Xiaofei and said, "Wang Ju, you must have something you haven't said!" ”

Wang Xiaofei said with a smile: "Zhang Ju, Zhang Lijuan has provided us in enough detail!" For Zhou Tianding, we also have a preliminary understanding, and what I am most interested in is the last thing she said, that is, Zhou Tianding gave his son a key! Can you think of what this key is for? ”

Zhang Tiejun thought for a while and said, "What is the key to the safe?" Maybe Zhou Tianding saved a sum of money for his son! ”

"Right! That's what I thought, too, it's supposed to be the key to the bank safe! That kind of VIP big customer safe key! ”

Zhang Tiejun wondered: "Does this have anything to do with this case?" ”

Wang Xiaofei said with a smile: "Maybe there is, maybe not, we can't judge Zhou Tianding's good and evil just based on Zhang Lijuan's words!" He can only be a suspect! We also need to dig deeper into the evidence! Let's go back to the bureau first, and the test results should be out! ”

Back at the Municipal Bureau, Xiao Zhang from the Laboratory Department came over: "Bureau Zhang, the latest test results, the liquid test results brought back by the Wang Bureau have come out, this is all the data!" ”

Wang Xiaofei took it and looked at it: "Now Zhou Tianding has been promoted to a key suspect, and the test results show that the blood type of the man who had a relationship with Liu Jiayu is blood type B!" It is consistent with the message that Zhang Lijuan gave us! ”

Zhang Tiejun said: "That can only prove that Zhou Tianding is related to this case, there are many people with type B blood!" Not enough proof! ”

Wang Xiaofei nodded: "You're right, so we're going to investigate this thing next!" He pulled a button out of his pocket and said.

"What is this? Didn't you teach the Evidence Section? Zhang Ju said.

Wang Xiaofei looked at the button and said: "This is what Liu Jiayu was holding in his hand when he died, this is the most direct evidence related to the murderer!" So in the case of not being sure whether there is an Infernal Affairs in the bureau, we can't easily take this thing out, we can only investigate secretly! In-depth forensics! ”

Zhang Tiejun nodded: "What you said makes sense, this button is not an ordinary button, this is a pure gold and jade button, this button alone is worth a lot of money, it is impossible for ordinary people to wear such clothes!" ”

Wang Xiaofei smiled: "That's right! So let's find out the owner of this button first, even if he is not the direct murderer, he must have a major relationship with the murderer! ”

"I agree with you! Well, let's strike while the iron is hot and find out the whereabouts of this button immediately! ”

Zhao Dabao suddenly said: "It's better for me to come!" I made this button into a treasure, and checked it thoroughly on the Internet, since it is gold-inlaid and jade, it cannot be from the manufacturer, so start with a jewelry store and check it thoroughly! I didn't expect to use my Internet police professional! ”

"Hey, hey? Wang Ju, you are a strong general, and there are no weak soldiers under you! Comrade Dabao, thank you for your hard work! ”

"Hey! It's all about this, nothing! Zhao Dabao took a picture of the buttons with his mobile phone, made them into a baby, posted them on the Internet, and found out that many online jewelry stores sold this kind of gold and jade buttons, but the appearance and price were different!

In the end, we finally locked down the baby with a matching rate of more than 99% with this button, and it was the only one - Cuihualou Jewelry Store.