Let you be the wall-facer: you turn around and join the Three-Body Problem?

Source name: Let you be the wall-facer: you turn around and join the Three-Body Problem?
Alias: Started as a wall-facer, joined the Three-Body Alliance and shocked the world
Tags: anime derivative, time travel, system, two-dimensional, fan fiction
Protagonist: Lin Xuan
Introduction: [Even if you are not familiar with the world view of the Three-Body Problem, you can rest assured to eat it] [Easy? A small amount of system? Not brainless]
Lin Xuan traveled to the Three-Body World and unexpectedly became the fifth Wallfacer after Luo Ji.
But what upset him was that he got an extremely unfair system, which required him to collect other people's shock value towards him in order to exchange various items from the system.
Lin Xuan quickly thought of the fastest way to collect shock points.
He chose to join the Trisolarans directly!
This operation confused both the opponent and the teammates.
UN Secretary-General: No, we asked you to be a wall-facer, so how did you join ETO?
Shi Qiang: It’s bad. If I don’t close the net on him, this guy will soon become the leader of the Advent sect!
Luo Ji: No buddy, which side are you from? You are about to kill three wall-facers, you can’t kill me too, right?
PDC: What should we do? Is he carrying out the Wall-Facing Plan or has he really betrayed us?