"Boom, boom, boom."

As if responding to Du Fei's call, in the distant sky above, that golden thunderbolt began to slowly wriggle, and then, its shape also began to slowly change.

"Roar."

A deafening dragon roar suddenly sounded, and instantly, that massive golden thunderbolt in the sky actually transformed into a Thunder Dragon, the size of a small mountain.

The Thunder Dragon's massive body hovered in the space, its gigantic eyes ...