My girlfriend loved it. I was a little underwhelmed To start, Shang Chi is a film worth going to see. If you're a Marvel fan it'll be a film that you'll enjoy; story, links to the wider MCU, action, comedy, and visuals. Just take a look at the reviews on here and you get the idea that it's a v good MCU film, that is slightly different from others that we've seen.
I thought to add a few things not mentioned in the reviews on here that struck me while I was watching;
a. The slow motion and music/sound during the slow Mo. Something I've noticed about Chinese cinema over the past 2 decades is the over use of slow Mo to try and be poignant or emotional. It's been overdone, especially with the slightly cheesey background music to labour the point. ShangChi leans heavily on these several times and I found myself rolling my eyes more than once. Admittedly you may not notice it.
B. The CGI. I thought it wasn't great, particularly at the start in the forest fight and the bus scene. It got better though, and overall the climactic fight was well rendered, if a little disorientating.
C. The 'eastern' mystical stuff. They tried to shoehorn in a couple of things but honestly it's kinda like an impression that a westerner would have about 'Eastern history and culture'. It reminded me a little bit of what Marvel did with The Ancient One (a Caucasian lady in Asian clothes), and the way Danny Rand tried to spout a few mystical phrases in Iron Fist.
D. Tony Leung, Michelle Yeoh and Yuen Wah. Three major players in Chinese cinema going all the way back to the 80s (I think)... It was great to see them here, particularly Tony Leung who has some of the most expressive eyes in film (I know it's a weird thing to say, but he has) and Yuen Wah who was a classmate of Jackie Chan. I would have liked to have seen more of the latter to be honest and would recommend you check him, Jackie, Sammo Hung and Yuan Biao out on YouTube.
E. The fight scenes. Overall they were very good, particularly the hand to hand on the bus (before the CGI). That one was sharp, aggressive and brilliantly choreographed. The one in the forest though!!! It's was one of that have been overdone in Chinese cinema, so an eye roller for me... ie a relationship developing as a result of a fight.
F. The humour was great imo and the delivery was great overall.
Like I said above it's worth seeing and you'll probably enjoy it. My girlfriend (who's not watch a whole lot of Asian cinema) did. I've seen a fair share of it, from the Shaw Brothers films up to modern day, so somethings did grate on me. Did I enjoy it though? Overall, yes.