The System Forces Me to Enter Forbidden Areas

I was bound to the cultivation system, but the system asked me to die. There was another time traveler locked up in the forbidden area. She said I was the seventeenth one, and that all the previous sixteen were dead. Then the sky split. A big hand with black scales stretched out from the crack and smashed the sect I had stayed in for three years with one palm. It turns out that the system is not a golden finger, but a reminder. And those high-ranking immortals, demon emperors, and demon emperors are all waiting for me to die. Why? Because I have something they want. One piece, a secret hidden for a hundred thousand years.