C574 The key techniques of chasing sisters

At this moment, within the building, there was a vermilion pavilion at the highest point of the mountain. Two white-haired elders were sitting there, playing a complicated game of chess.

Every step seemed to require a huge amount of energy.

The two of them were just like the current Qingshan, who was staring at the military cannons on the chess board without moving. After a long while