One kill!
This was the first piece of information that surged in Xu Tui's mind out of thin air. He understood that this should be caused by the rules of the Heavenly River Chessboard. After killing the black pawn, he would obtain the reward of the Heavenly River Chessboard. If he seized the black pawn, he could choose to devour or refine it.
After killing the black pawn, he will receive a battlefield reward. He will be able to obtain the most precious treasure of the black pawn player. The extraction has been completed. If he doesn't need it, he could resist with his mind power and it will dissipate on its own.
He had to choose to complete it within 60 seconds. Exceeding the time will be regarded as giving up.