Lies Come True: I Become a Sage Through Lies

[Rapid power-ups + wish-fulfillment + one heroine + scheming + play the pig to eat the tiger]

Jiang Tianci transmigrates to a fantasy world. But after awakening his memories, he discovers that he has spent eighteen years as an idiot, wasting every one of those years that he could have spent cultivating.

Fortunately, he has a Lie-Into-Truth System. Whenever someone lies to him, it can trigger the Lie-Into-Truth function, allowing him to make a choice and receive a reward.

Jiang Tianci is extremely cautious. He wants to keep the fact that he has become normal a secret for now. After all, being an idiot makes it much easier to lure people into deceiving him.

People tricking an idiot becomes part of everyday life.

Someone tells him that the rusty sword on the ground is a treasure from ancient times. To his surprise, when he picks it up, it really is an ancient supreme treasure.

Someone else tells him to pick up the weeds, claiming they are premium medicinal herbs. To his surprise, the weeds really are premium medicinal herbs.

Another person tells him that if he climbs that mountain, he will become a sage. To his surprise, once he reaches the top, he really does become a sage.

It is only later, when a young prodigy appears before everyone again and cleaves open the gates of Heaven with one sword strike, then settles the world with another, that they realize they have been deceived. They had been tricking him because they thought he was an idiot.

So who was the real idiot? It was all just a lie Jiang Tianci used to fool them, the real fools...