Accident on the stairs

As he got closer to Allen Chen, Allen Chen felt his heartbeat quicken and the blood in his body flowed much faster, as if flowing in the reverse direction.
What a strong internal force! This old man's strength is stronger than all the masters I have seen before!
Allen Chen Ming was thinking to himself. Just as he was about to confront this person, Mr. Wang suddenly smiled, stepped forward, patted Wang An on the shoulder and said, "Wang An, please step back. Don't be rude to Young Master Zheng."
"Yes,...