Capítulo 501: Mysterious Half Fairy

It was the first time Su Yu had seen such a elated look on her face. Wei Kang was also elated. "Congratulations, Teacher! you finally found the Mysterious Heavenly Crafting Technique!"

Suddenly, the space behind them rippled. An air current suddenly shot toward them. It contained a strong killing intent!

Lü Chuyi and Wei Kang were in the midst of their excitement and did not notice anything strange. Only Su Yu, who was not as surprised as them, immediately noticed the change in air current.

Turning back his head abruptly, Su Yu's expression turned cold. The air current changed its course the moment it was noticed, charging in the direction of the tunnel.

"You wish to leave!" Su Yu let out a low grunt, tossing out the Nine Yin Yang Formation.

Whoosh! Whoosh—

The air crackled multiple times as the Nine Yin Yang Formation activated, enveloping the faint figure.