You died, but a creature calling itself System gave you a chance to be resurrected.
The full name of the system is "The System for Achievement of Difficulties in Feelings", and its goal is to achieve things in troubles.
It tells you that you can accumulate enough achievement points by becoming Yi Nanping or saving Yi Nanping. When the achievement points in that world are full, you can go to the next mission world, otherwise you will stay in this world.
If you are obsessed, you must not be willing to be trapped in a strange world, so you accepted the system's invitation.
Intention: gentle, firm and confident