What impressed me most in the demonstration class of Miss. Ji Kexin was a well-chosen VCR made by one of her students. In this wonderful VCR, her student made an amazing self-introduction in German, which attracted the attention of the whole class, including all the teachers present. This VCR served as a fantastic teaching aid in helping the students better prepare for their oral German exam. Besides, it is really impressive to see such a tacit cooperation between Miss Ji and her assistant teacher.