Immortality Cultivation: I Farm in the System Space

Lin Jing had transmigrated.
And he had unlocked a System Space with its own Spirit Field.
Thus...
While others sought out the Secret Realm, he was farming.
While others fought over resources, he was practicing Alchemy.
It was in this way that he slowly grew with the passing years...
Until after countless ages, someone finally realized that the great one was actually him...
This book is also known as:
"First I Farm, Then Do Alchemy, I Seek Immortality by Holding On to Life"