In terms of emotion and reason, public duty and private interest, Le Yu could not simply leave these unconscious sword sheaths here. Now that they were useless, who knew whether some foreign race would come back and casually finish them off?
Actually, if Cha Shiyin had not intentionally saved them, Ming Jiejin's sinister tricks alone would have been enough to deal with the sword sheaths. As he had said, as a blond, blue-eyed outsider, he had not the slightest sympathy for these Huiyao Heroes.
The first ones he carried away were naturally Ning Xinyuan and Nieruo. Ning Xinyuan went without saying. Even if he did not consider Yan Yi's sake, Ning Xinyuan's help when Qin Leyin was being brutally beaten was enough to make Le Yu pledge himself to her.
To be honest, when he heard Ning Xinyuan plead for his sake, Le Yu was genuinely moved. If he had not had Qing Lan, and if Ning Xinyuan had not been a married woman protected by Yan Yi, imitating Wei Wu's heroic style would not have been out of the question...
As for saving Nieruo, it was not for any other reason. First, Le Yu admired his unyielding nature. Second, he seemed to be close to death. Le Yu glanced inside the stone coffin. Although Nieruo's expression could not be seen beneath the Madness Mask, his entire body was a bloody mess. Le Yu could not even hear him breathing or his heartbeat, so he had to get him out quickly and find a physician to save his life.
As for why he did not take the opportunity to kill these sword sheaths and clear the obstacles to Ming Shuiyun's ascension... What a stupid question. In two days, the armies from the outer districts would be storming into Flame Capital.