章節 971: Promoting to an Earth Knight (II)

The colorful mist in the Castle of Black Iron was blurred, changeable and irresistible. No matter how the virtual image of king roc tore it furiously and attempted to break the heavens; it was always limited in the space of Castle of Black Iron.

After an hour, with furious and unwilling blares, the virtual image of king roc flew back to the top of the immortal mountain. Closely after that, it turned into a light rain over the sky and finally entered into Zhang Tie's body.

Zhang Tie then opened his eyes and stood up.

'Is that the feeling when one promotes to an earth knight?'

Zhang Tie felt each cell in his body was releasing a surging strength while being tranquil inside.

At this moment, if the black iron chakra was regarded as a steam engine for an automobile, the earth chakra could be taken as a large set of the steam turbine, which could drive a train or a steamer.