Suspect with Hundreds of Billions in Prison

He was originally a "rebel" imprisoned in the deepest part of the prison, and he was accompanied by cold steel doors and heavy handcuffs day after day. Until the sound of the metal colliding of the bunch of keys broke the silence - the superior came to the door with a difficult task. The target was a business tycoon with a glamorous appearance and hundreds of billions of assets. He was also a trade president and technology founder, and a "good man" of a charity fund. However, there was a suspicion of smuggling behind it. The only undercover agent Xu Feihu (Xiaohu) lost contact mysteriously after passing the clues, and there was no news at all. And Xiaohu was an old friend who had been with him for three years due to minor conflicts. On the one hand, due to the "soft and hard tactics" of his superiors, and on the other hand, he was concerned about the safety of his old friends. He complained that "this business is not done", but he finally accepted the task. He thought that regaining freedom was the beginning of his mission, but unexpectedly, as soon as he took the first step out of the cell, a heavy blow plunged him into darkness. Is this targeting aimed at uncovering the truth about the crime, or is there another hidden agenda? What kind of unknown abyss will the last muffled sound before coma push him into?