Reviews of professor Yiyan Li

Rating: 1.0/5, difficulty: 4.0/5
Yiyan LI often speaks too softly to be easily heard and often appears unsure of herself, stalling during lectures. She is often unorganized, failing to post her slides till days before the exam despite saying otherwise and likely would have forgotten altogether had she not been reminded. MC exam questions are splitting hairs, not main content, etc