chapter 223 Life-saving grace

boom!

The fists of the two men collided, Andrew Xiao's body swayed, and the middle-aged man also took a step back!

There was a flash of surprise in Andrew Xiao's eyes. He had only used about 50% of his strength in that punch. Even a top-notch expert would probably have to take a few steps back!

But this middle-aged man only took a step back, and he had acted in a hurry just now, so he might not have used his full strength!

So, what is his strength?

According...