The Devil Does Not Need to Be Defeated - Chapter 213: Underground Magic Books Library

mc gets transmigrated to Fallout New Vegas with the merchant system. let the questionable adventure begin.

If life could repeat itself, what would you do?Would you repeat your first life and stay a normal average joe? Perhaps your gaze will betray the life you’ve already lived, but you remain insignificant and unknown, stretching your neck up high to watch the furling clouds roll by?Or will you make the world your stage, stir up every cloud and wind under all the heavens, making the entire world your captive audience as you dance, making people’s hearts pound with your every move?Composing my own laws, establishing the order I desire…a human life is a measly ten decades, so why don’t I light the candle that is my life and set this world ablaze!!

Civilization is destroyed and records lost. Only Dudian survives in a cryogenic sleep. Three hundred years later, Dudian wakes up and must become Dean to survive. Who can he trust in this world overrun by monsters without and within?

- Description from Novelupdates

After an explosion, You XiaoMo finds that he is now a probationary disciple of the TianXin sect. However, he is one with dubious potential, so just when he starts to adapt to his new circumstances, he receives a piece of bad news. If he is unable to produce the required result after half a year to become an official disciple of the TianXin sect, he would be driven out of the sect.