C1394 This is a mystery

The technique Zhao Chenggong used clearly reminded Ye Haochen of the past. Wasn't this the technique that the Old Instructor's blade used to be?

Previously, Old Instructor's Battle Blade professor gave Ye Haochen this set of martial arts, he never expected that he would also teach it to him.

Perhaps the familiar martial arts style reminded Ye Haochen of the past