Xuanhuan: I Can See the Flaws in All Things

A great emperor was reborn in a world nine thousand years in the future, as an utterly ordinary nobody.

He knew this world was merely a secret realm. Martial artists from the outside were waiting for its gates to open so they could return and pillage it once more.

He had thought time was running out and that even after being reborn, he was doomed. But then he awakened a golden finger: an all-purpose System!

[This technique has 72 flaws. Correcting them can raise it from low-grade Earth rank to Heaven rank.]

[This pill recipe has 23 flaws. Optimizing it can lower the required ingredients from a tier-six pill to a tier-two pill, with less waste, greater potency, and easier preparation.]

[This spirit skill has 30 flaws. Optimizing them can raise it from Heaven rank to Emperor rank.]

With the System and the experience of his previous life,

Zhang Yi went from an ordinary mortal to an all-powerful, peerless emperor, and made high-level techniques, spirit skills, and pill recipes available throughout the world.

Years later, when the secret realm's gates opened and martial artists from the outside rushed in, they found that everyone inside had a Tribulation Transcendence cultivation level, and were utterly dumbfounded.