So I Really Am a Hidden Master

Chess (Grandmaster), Music (Grandmaster), Calligraphy (Grandmaster), Beast Taming (Grandmaster), Carving (Grandmaster), Painting (Grandmaster)...

Spirit Root: None!

In a world where everyone cultivates, what use are all the abilities bestowed by the System, even if he has mastered them to perfection?

Then one day, the Holy Maiden arrived, bought one of his paintings, and broke through a cultivation bottleneck.

The entire Holy Land was thrown into an uproar, and even the Holy Lord came seeking a fortuitous opportunity!

What? I'm a hidden expert?

How come I didn't know?