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

Following Chu Pingfan's successful breakthrough, the system reward that Chu Xuan was looking forward to also arrived.

"Your nephew, Chu Pingfan, cultivated the Extreme Dao under your guidance. He instantly broke through to the truth realm and became the ninth truth realm cultivator under the age of ten in history. You have been rewarded with 300 years' worth of cultivation!"

"You taught the ninth truth realm cultivator under the age of ten in history, who is also the first Extreme Dao cultivator to enter the truth realm at the age of nine. You have been rewarded with the Aurora technique."

Chu Xuan was pleasantly surprised. The system's reward was beyond his expectations.

Moreover, Chu Pingfan was the ninth truth realm cultivator under the age of ten in history?

Not to mention, he was the first Extreme Dao cultivator to enter the truth realm at the age of nine in history.

Breaking Through To The Heaven Realm, Heavenly Tribulation