Who's in the high school chemistry class of teacher Leng? Is she really that good at teaching?

I have listened to teacher Leng's class. In class, Mr. Leng will show you clever problem-solving methods, instill you with a unique mode of thinking and give you a refreshing feeling. You will see extremely harmonious classroom interaction between teachers and students. Cold teacher's chemistry class, if you don't concentrate and get distracted, the teacher will wake you up at once. Therefore, we are happy and nervous when we go to the cold teacher, and we can't relax for a moment! !