C594 Return to Original Nature

The second punch, compared to the first one, was already felt by Su Ze from the moment Chu Nanxun punched. Chu Nanxun did not use his full strength for the first punch. At most, he only used a little bit of his strength. Even so, Su Ze was still caught unprepared by the attack and suffered internal injuries.

How powerful was the second punch? According to Su Ze's judgement