In this world, things often seem easy when others do them, but difficult when done oneself. Mr. Yu explained the sword move changes twice, and Zhang Xiaohua understood them clearly. However, when he picked up the tree branch to practice them himself, he couldn't meet Mr. Yu's requirements no matter how hard he tried.
After several attempts, Mr. Yu grew impatient and said, "Zhang Xiaohua, let's stop here for today. Go back and think about the changes in the sword moves and practice them diligently. Also, don't forget to recite the Sword Secrets regularly; make sure to memorize them thoroughly."
Zhang Xiaohua asked hesitantly, "I know the changes in the sword moves and will practice them diligently, but I don't understand the Sword Secrets at all."
