He is always caring for students and willing to help them. Exams are somewhat difficult but he offers bonus points as long as you would like to put efforts.

His low reviews are just people who have low grades. Yes his exams are difficult and he actually grades your homework on accuracy but you get what you put into the class. Prof Zhou is amazing and I would take his class if the opportunity ever arises again.

Dr. Zhou is super accessible outside of class in office hours. His midterm extra credit is helpful, and his in depth study guides make sure students know the general flavor of exams. He will never give you a problem you have seen before on an exam, but with studying, they are certainly do-able.

its a really hard class but prof zhou is super understanding, is willing to help you understand the material, and is very accessible outside of lectures. he also offered extra credit opportunities for the midterms by doing reflections and presentations.

The lectures were clear and engaging, significantly enhancing my comprehension of the material. Additionally, Prof Zhou's generosity with extra credit opportunities reflected a sincere commitment to student success.

Excellent teaching. Patient and welcoming to students' questions, and explain concepts in detail. He motivates students to really understand the concepts instead of memorizing them. These negative comments are only due to the difficulty of his exam, but he made it clear from the start that there won't be repetitive questions. Will take again.