Chuang Hung-sen is a gentle man who has trouble putting on a gruff air. When Chiang Yi-hsuan threatens to throw a temper tantrum or becomes reluctant to try a certain technique, Chuang sometimes whips out a cage full of preying mantises. As soon as his star pupil sees the insects, she plucks up her courage and overcomes the challenge.
擺不出一張兇臉的莊鴻森就常端出黏了許多蟑螂標本的蟑螂屋，鬧脾氣或是不敢做動作的萱萱一看到「蟑螂老師」，就鼓起勇氣、克服難關了。