Zhang Shengyi knew very well in his heart that he had not rested well recently, and it had a lot to do with the person who wrote the threatening letter. He vividly remembered the words written on the threatening letter: "I will drag you into hell little by little, so that you too will taste the taste of life worse than death." ”

At first, Zhang Shengyi didn't care about this insinuation, and even felt that it was just nonsense, but some recent events made him no longer think so.

Since receiving the threatening letter, he has noticed that the aminophylline tablets he usually carries with him have changed a little, it is a small change, the color has become different from before, and even the size seems to be a little different.

Sometimes, even after taking medicine, he still feels difficult to breathe, and even has some chest tightness.

Chapter 24 of "Unsolved Cases in the Bureau" Surveillance is in the middle of the hand, please wait a moment,

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