After reading Xinyi’s post, one of the things that attracted me the most was that each step in her lesson plan is very intuitive. According to Merrill’s principles, she has taken the old knowledge that students have mastered as a foundation into the lesson plan, and Xinyi attaches great importance to the synchronization of each student, so “a refresher lesson” is covered in the lesson plan to ensure that every student is all on the same foundation for deeper learning. Such a refresher lesson is essential when teaching new knowledge, which not only enables students to strengthen the understanding and consolidation of old knowledge but also helps students to understand new knowledge from a more comprehensive perspective. Besides that, Xinyi also refers to the concept of “New knowledge is demonstrated to the learner” and integrates appropriate video materials into the teaching process, which is a very efficient teaching method for both students and teachers.