C5037 Solve It!

Thinking of this, Tang Yu stood up. With a serious look in his eyes, he unleashed his Strength of Flame and injected it into the eight grooves.

When the grooves were filled, Tang Yu condensed the flame and took out the eight flames that he had poured into the grooves. This caused Tang Yu's heart to tremble!

The flame that was condensed was the shape of the key to the so-called keyhole. However