Reviews of professor Xingzhong Yan

Rating: 4.0/5, difficulty: 1.0/5
Took 5 week Chem II online. Wasn't complete torture. Do all the assignments and you'll pass. His reviews are the exact possible exam questions. Once you figure out his pattern, very easy. Was very good at emailing back and in a timely manner. Online course was disorganized or had repeat info in many many different spots.