C214 How is this possible？！

A hint of disbelief finally appeared on Zuo Tongya's cold and charming face.

Because Tang Lin's current aura had actually broken through the realm of Pre-Natal Martial Cultivator, and had reached the realm of Upper Sky warrior.

How is this possible?

Wasn't Tang Lin a person who didn't belong to any sect or clan? How did he do it?

Even in the various Sacred Grounds