Transmigration, myriad worlds, invincibility, ruthless action. This isn't a spy thriller, folks, I picked the wrong category.
After Pei Shaoan transmigrates, he is tormented and experimented on for three years in a mental hospital. The hospital is like a ranch, waiting for its livestock to be harvested.
Just before he dies, he awakens the Myriad Worlds Reincarnation System. After his first transmigration, his strength increases. When he captures the hospital's administrator, he discovers that they are all doppelgangers of the mastermind behind the scenes.
Who is the mastermind in their true form, and where are they? Where did the System come from? How did he transmigrate? And where is Earth? One mystery after another awaits him.