Rock Tiger.

Hao Ren looked around with his spiritual sense after punching the man to check if Fu had any accomplices. After confirming that there was no one else, Hao Ren walked over to the groaning victim who was choking on his own blood. 

Fu was shocked to see Hao Ren come over and he tried to stand up but he could do nothing more that shiver. The young man came next to him, and stabbed him with a few pins, then he channeled some spiritual energy in Fu's body before he took out a glass vail, and poured its content inside the mouth of the old man. 

Fu wanted to struggle but after a few seconds of drinking the potion he was struck in a daze. Hao Ren checked his pulse and dilation of the pupils before he asked, "Does anyone knows you are here?" 

The man shook his head. Hao Ren asked, "Who are you?"