Although Jiao Jinfeng had already reached the spirit returning realm, the Black Dragon Gang's overall strength was still much weaker than the five major gangs. If they became a big gang now, the five major gangs would definitely deal with them. At that time, they would be finished.
It was for this reason that Jiao Jinfeng had disguised his strength and not revealed it. He was planning to develop the Black Dragon Gang and make it stronger. Then, he wouldn't be afraid even if the five gangs wanted to deal with them.
However, although Jiao Jingang had concealed his cultivation, his concealment technique was too bad for Liu qingrui. Liu qingrui could see through his true strength with a single glance, so when he heard that Jiao Jinfeng was going to fight personally, not only was he not angry, he was very happy.