MTL - Legend of Swordsman - Chapter 3363 Genius Elder

Ling Xiao was a powerful martial expert who fell in battle and was unexpectedly transmigrated into another world. He began life anew in the body of a boy with the same name, a fallen genius of the Ling Family whose cultivation had been crippled in a surprise attack, and son to a father who had also suspiciously been crippled under similar circumstances. Armed with knowledge from his previous life, Ling Xiao aim to restore his strength and establish his place at the top of this new world

- Description from Novelupdates

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

After binge-playing a game for seventy-two hours, the single-player streamer Yang Yu, who made his living selling game guides, quietly passed away in his bed.Unaware of his own death, he was invited by a deity to conquer an RPG game, and was persuaded into choosing the hardest civilian starter.Couldn't even defeat a single slime after leaving the novice village? Want to learn a taunt skill but have to actually verbally taunt? And the gacha only yields trash?Faced with numerous hardships, he actually... got excited.A true gamer never fears challenges; they only fear the game being too easy.As his sparse panel began filling out, Yang Yu felt an unprecedented satisfaction swell within him, and he became addicted to making waves, unable to stop himself.'Hey? There seems to be a lone hero up ahead. Watch as I turn him into a unit of combat power! Damn, I’ve been spotted. Hero, don't run away!'