C863 The Structure of the World of Teaching

The gray head would occasionally raise its head to look around vigilantly. Yu Yin, who was nearby, came over to a lonely boulder and observed for a moment. Then, he slowly raised the arrow in his hand.

With a whoosh, the arrow pierced the back of the gray horse's butt.

With a squeak, the Four-Eyed Beast turned around and ran. Under Yu Yin's surprised gaze