It was a world where miraculous pills like the Life-Giving Pill existed, that could bring a person back to life as long as he was not dead for over 10 minutes, but even that pill would not work as long as the person didn't have a head attached to his body. That's why Long Chen never left bodies with head intact. Especially of the powerful cultivators that could become a threat to him in the future.
Long Chen was about to leave when he heard a voice from behind.
"You killed our Junior Brother Lu! I'll kill you!"
Long Chen turned back and saw 3 disciples of the Mighty Sword Sect.
All 3 of them were stronger than the boy that he had killed. As he saw their Cultivation, he was able to guess that even the strongest of them was just as strong as Su Zhen from his team.
"Take the body and leave. At Least you can walk now. If you died as well, who will take the bodies back?" Long Chen told the men as he turned back to leave.