"Item sale failed. Obtained random attribute point: Constitution +1."
"Item sale failed. Obtained random attribute point: Strength +1."
"Item sale failed. Obtained random attribute point: Agility +1."
Lin Xuan transmigrates into a game and obtains the Black Shop System. Whenever he fails to sell an item, he receives a random attribute point as a reward.
"I get rewarded for failing to sell things, and make a fortune when I succeed. How could I possibly lose?"
From then on, the game gains a true black-market shop, run by an NPC who doesn't want to sell his items.
This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.
He's still smart, almost mentally retarded.