Half a clear breeze

Chu Xuan transmigrated to a fantasy world and became the young master of a powerful family. He was rebuked for misbehaving just because he sneezed during a banquet. As punishment, he was banished from the ancestral mansion and was relocated to a remote residence.
He did not mind the punishment at all. He just needed a spot that could allow him to be a shut-in. With the system that would allow him to grow stronger by being a shut-in, the longer he stayed indoors, the more powerful he became.
After being a shut-in for a day, he was rewarded with the Indestructible Body Technique.
After being a shut-in for a month, he was rewarded with the Immovable Mountain Technique.
After being a shut-in for a year, he was rewarded with the Yuxu Celestial Scripture and 100 years of cultivation.
After being a shut-in for 10 years, he was rewarded with the Chaotic Indestructible Body and the Bell of Chaos.
…
Chu Xuan declared, “No one can make me leave my home. I like being a shut-in!”

I Stayed At Home For A Century, When I Emerged I Was Invincible

Even a Dao Creation realm expert would not be able to easily discover the Origin Great Dao, as it had now adopted some of the characteristics of the void region.

Everything was going according to plan, and given time, would mature to provide Chu Xuan with bountiful rewards.

Thirty years after Xue Ping's departure, while Chu Xuan was planting a certain spiritual herb, the system's reward suddenly appeared.

"Your disciple, Xue Ping, saved your disciple, Yi Lingling, using your jade talisman and suppressed the remnant soul of a Dao Creation realm cultivator. The name of the Xuan Gate sect has begun to grow. You have been rewarded with the Xuan Gate manual."

Chu Xuan was a little surprised. He had indeed wanted to rescue Yi Lingling, but had not expected the outcome to result in the system's reward being triggered.

Xuan Gate Scripture Pavilion (Part 1)