No way to defend oneself

Just when everyone was confused, the young man named Yu Luo, who had taken the lead in killing the suspected evil cultivator, stood up and said, "It's obvious that he was killed by some vicious creature. Why did you have to make such a fuss? Who are you trying to scare?"
Bang!
Just as Yu Luo finished his words, an incredibly fast figure suddenly flashed and slapped him on the back, knocking him away. He immediately vomited blood from his mouth.
"You! Hiram Irwin, ​​what do you mean...