Tseng laoshi is a really great Chinese prof, and so far she is my favorite out of the three I've taken! She can be strict at times, but she means well and really cares about her students. All of the work she gives you is meaningful and useful to your learning, so there is no busywork here. Sometimes it does seem like it is a ton of work though, but I like how she is very chill about the oral assessments. Overall, I recommend her as a Chinese professor!