Personally, I think Shi Jihuai is better, first of all, the teaching materials. Shi Jihuai's textbook Mathematical Analysis Course is rich in content and theoretical. Personally, I think this is the best teaching material of mathematical analysis in China. Moreover, Shi Jihuai gave lessons to HKUST juvenile class on video, which was very good. The narration of a theorem, from introduction to how to prove it, is very coherent, very clear in explanation and very clear in thinking.

Of course, Fudan is also good, but I still think HKUST is better, although HKUST's math level is not as good as Fudan's.