To be honest I hated the guy until the final. Lectures primarily consisted of him waffling and you were better off reading the textbook. They were funny though. I got a D- on the midterm (which he curved to a C-). Then he gave an extremely easy final worth 50% of the course grade and I ended up with an A after the final curve. Peak cinema. 10/10

Horribly disorganized, bad handwriting, weird tangents, constantly corrects himself so you have to rewrite notes, and switches between going too slow and too fast. His phone went off 20 times during the final exam and he did not silence it. If you are forced to take a class with him, grading is reasonable and you do get a cheat sheet on exams.

Actually pretty chill and kind. As has been said he provides some good notes. He's flexible with students. I don't understand why there's so many bad reviews. Complaints about his "loudness" or otherwise are just because of his accent. Ye is one of the few prof in the dept to be highly accomplished, but yet not be overly demanding with his students

The syllabus was just homework midterm final, no course description, no professor email, nothing. Lectures are arguably worse than reading the book on your own. Ye goes incredibly slow through class and doesn't explain any ideas or do any examples. Personally, I just take notes from the textbook instead. Avoid taking his class if you can.

Course material is straight forward. Always presents example proofs and often shows different ones than from the textbook to let you see the multiple ways to approach things. Lecture is sometimes silly when he spends the whole time on one big proof but typically the concept demonstrated is essential. Tests on the basics, nothing tricky.

He's a terrible professor He has office hour but seldom there at office. The tests are out of wall. He cancelled our weekly homework because there is no grader. Then he adds the percentage of homework to the final. He sometimes speaks Chinese in class. He always skip the questions that asked in class even makes me think he doesn't know the answer.