Longevity Martial Arts: Grinding Experience in the Chaotic World

You have transmigrated, named Gu Sheng, and are a farm boy. This is a dynasty in chaos, where demons and monsters lurk and bandits run rampant; as someone at the bottom, you face hellish survival difficulties. You decide to lay low.

You awaken a mastery panel. You breathe a sigh of relief, you can start grinding. You grind Chopping Wood to Perfect, chopping bones and breaking tendons with ease. You grind archery to Perfect, becoming a godlike archer who can hit a louse at a hundred paces. You learn the Iron Stone Fist, set foot on the path of a Martial Artist, and grind it to Perfect, with punches as heavy as a million pounds.

You learn the Longevity Eternal Youth True Art, greatly extending your lifespan, giving you more time to grind, and greater hope to lay low. You grind to the limit, steadily laying low, and one day you suddenly realize, you are invincible.