Alex was already standing far enough away from that man so that he could maybe dodge if the man decided to throw out an attack. The man was just so much stronger than him that he needed to be careful at every step.
Seeing the green illusory feather appear behind the man, Alex silently activated his Spirit Reversal technique, just in case the attack was something that targeted him directly.
Alex felt something coming for him right at that moment. It was fast and it was strong. His Qi drained at that very moment, going down by quite a bit. Whatever the attack was, it was instant and it was strong.
The old man seemed surprised to see Alex stop the attack. He couldn't tell what Alex had done, just that he had stopped it. He grumbled a little, determined to kill Alex.
"Senior, before you attack again, I must warn you. My master is Silvermist. If you kill me, my master won't let you live," Alex said.