When AI takes over 90 percent of humanity's jobs, World X opens up.
Here, you can cultivate to immortality, and even return after death.
On his first day in X, Song Fan gets killed after being set up. He comes back to life, but his corpse, storage ring, and grudge are all left behind.
While others fight for immortal opportunities, he's busy retrieving his own corpse. While others fight head-on, he'll ambush them rather than take them on directly, and even after winning, he'll still pocket their storage rings.
It isn't until he obtains a fragmentary scripture that reveals cause and effect that he discovers X's most terrifying rule:
People can come back to life.
Cause and effect do not reset.