"Always willing to help if you had questions after class or in office hours."

"Professor Xu is an amazing teacher and has helped inspire me to further my education. His teaching style is interesting and he always brings real world into the classroom. One of the best teachers I've had and he completely changed my view on the business world. 10/10"

"Really knowledgeable professor. Great international perspective with Econ information compared to countries like China, and even how they deal with problems such as covid. Answers questions and is very helpful. Wish I could have him as my Econ advisor."

"He is a great professor and he continues every day to make the students learn more and makes it challenging but also at the same time shows the students after, what the way to answer is which allows the student to try the problem then see the correct way. With the two classes I have taken with Professor Xu, I have enjoyed both and think he is great professor for Simpson College."

"Zhengang Xu is one of the best instructors I've ever had at OU. He spends far more hours preparing for his students then I've seen any other instructor do. His notes are very easy to understand, his delivery of information is clear, and his practice problems are great for grasping concepts. Is accent was of no issue and understood him perfectly throughout the semester. For his first class ever taught, I believe Mr. Xu did an excellent job and I'd enjoy taking more of his classes in the future."

"He was a good professors and really broke down the steps to help ensure we could apply this in real world problems, during possible jobs or internships. I like that he applied it to real-world examples."

"Professor Xu was very helpful and wanted his students to succeed. He was accommodating for needs, and he was always available to answer questions."