Chapter 237: Teaching the technique, Extreme Yin Xuan Tian Gong

"Boom" the black clouds rolled, shaking the heaven and earth.
The hillside that Maximus Woolf chose was not far from the Liu family manor and could be seen from the gate of the manor.
At this time, Liu Zhen and others could not rest in peace, and they all looked at the hillside nervously.
Because the noise was too terrifying.
"Crack!"
A flash of lightning split the sky.
In a flash, a huge dragon-shaped creature appeared faintly.
"what is that?"
Liu Zhen was startled...