The reason why he didn't take action with all his strength. It's not that he wants to show mercy to Qin Mutian. In addition to wanting to know how strong Qin Mutian is. In addition, he also knew that even if he tried his best, he would not be able to kill Qin Mutian. At most, he would only injure Qin Mutian. Most importantly, he had to beware of sneak attacks from Xing Xi....