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

Inside the small courtyard, a group of Netherworld race members stood trembling behind the Grand Elder.

Their faces were filled with confusion and despair.

Did the Grand Elder not say that this trip was almost certainly safe?

Their target was just the small Chu family.

Even the Grand Elder had been captured.

'It's over, our Netherworld race clan is going to die!'

The Grand Elder's lips trembled, and his body shook. His originally illusory body trembled as if it was about to disperse.

Chu Xuan looked at the one hundred or so members of this Netherworld race clan.

Heaven's Secrets Origin probing technique:

Turning The Netherworld Race Into A Ghost Race, Ancient Netherworld Scripture