At 25, he looks like an ordinary company employee: he rents an apartment, rides a shared bike, gets rejected on blind dates, and is invisible to his coworkers.
His true identity: the last Keeper of the Classics of Kunlun Ruins.
His master brought him into the secret realm of Kunlun when he was ten. After fifteen years of ascetic cultivation, he mastered tens of thousands of Taoist texts and reached the state of "returning to simplicity." In plain terms, he is so powerful that as long as he doesn't use spiritual power, even the laws of Heaven can't detect him.
Before his master passed away, he left him these words:
"In the Age of Dharma Decline, the spiritual qi revival is about to begin. Enter the world first, and keep a low profile. Let those little clowns dance around. Once all the pieces are in place, flip the board."
So Lu Zang has spent five years in the mortal world without ever using magic or displaying his powers. He earns a monthly salary of 8,000, and when his landlord says the rent is going up, he just accepts it.