Is Shang Chi really the best Martial Arts teacher for him? I would have said Ironfist since their already good friends. I personally think Batroc would be a good choice even though they have no real history together, his fighting style seems more suited to Spider-man's powers.
 
And have Shang Chi and Spider-man even associated before Shadowland?

@JoeRiccadonna: Recently. Amazing Spiderman #664

I think Shang Chi is a great teacher. While Iron Fist is great too, I don't think he would be any better. Plus Madame Webb requested Shang Chi and she knows what she's doing. ;]

By mixing his own fighting style and adding real martial arts from Shang Chi, he's creating a new way. It will be call the way of the spider.

@Duo_forbidden said:

By mixing his own fighting style and adding real martial arts from Shang Chi, he's creating a new way. It will be call the way of the spider.

Exactly. The idea was to give him an edge to make up for his currently disabled spider-sense.

I think this is a cool idea in general. I always thought Spidey was a good fighter but this definitely makes him better and more effective fighter. Would love to see how he goes against his regular foes with some new moves.

@Shadowsnake89: Yes, Iron-fist is his friend, or perhaps we should say a 'closer' friend, but being someone's friend does not make someone a better instructor...  Also, I'm not positive about this, but I do believe Shang Chi is possibly a better martial artists, although they are both masters.  Shang She depends entirely on his skills as a martial artist.  Iron-fist depends on his skills as a martial artist but also the power of the Iron-fist (the magic of Kun-la and what have you.)  Also, as Icon said, Madame Web recommended Shang Shi (or talked Shang Shi into it) so she had to have her reasons for it.

And have Shang Chi and Spider-man even associated before Shadowland?

@Warlord: His powers are just too good. Even without training, his speed, agility strength and spider-sense are more than enough to handle and beat most of the villains he faces. Actually the question is how some of these guys can even hold their own against him. And the reason is because he holds back. Yeah, this is how good spidey's powers are. If you need me to post scans of what his powers let him to do, let me know. :)

@Warlord: 
 
There's really a lot of explanations to such a question.  

Read a bit of Marc "Animal" MacYoung. This guy a licensed expert on fighting, he even gets pulled into courts for his "expertise" on combat when excessive use of violence has been used to determine if it was intentional lethal force or in the cause of self defense. I read a lot about him. In his book "Cheap Shots, Ambushes, and Other Lessons". He goes over the question you have. But I'll sum it up for you... 
 
Training and experience don't make you, it only helps to prepare you. It's all about how you use that training. For example... Marc has been with Green and Black Berets, Commandos, Black Belts, and have seen them get whooped on the street or in the bar. Training and experience only helps to prepare you for a scenario of encountering danger, not how to handle it and win every time. It really depends on the person, how well they can control them selves psychologically and physically. A lot of people get "tunnel vision", or adrenaline makes them rush in and make their moves ineffective, or they just forget or choose the wrong "answer" to a "problem".  
 
These are only several of the circumstances that can be listed off. But my initial point is... the possibility of why Spidey wins against more "skilled" opponents can be a number of many things, other than Spidey being physically superior. Because we've all seen instances where Spidey's reliance on his powers don' always pay off, against guys like Iron Fist, Daredevil, or Captain America

Richard Dragon would be a great teacher. He taught Bruce Wayne a couple of things. unfortunately they are an universe apart.  
 
It's a great idea to have Peter training.  
 

as shown by power man or something in the issue where spidey gets the key of the city from jameson but looter shows up, his chi can "predict" the opponents next move, so its prob like artificial spider-sense very good idea from slott, although i think peter should still get his spidey sense back

This topic reminds me of What If - Spider Man & Wolverine, where Spider-Man had martial arts and black ops training from Nebo and turned into badass version of himself.

@Timandm said:

@Shadowsnake89: Yes, Iron-fist is his friend, or perhaps we should say a 'closer' friend, but being someone's friend does not make someone a better instructor...  Also, I'm not positive about this, but I do believe Shang Chi is possibly a better martial artists, although they are both masters.  Shang She depends entirely on his skills as a martial artist.  Iron-fist depends on his skills as a martial artist but also the power of the Iron-fist (the magic of Kun-la and what have you.)  Also, as Icon said, Madame Web recommended Shang Shi (or talked Shang Shi into it) so she had to have her reasons for it.

Shang Chi uses chi as well and he is no better fighter than Iron Fist. Actually Danny is the far better one. Just because he sometimes uses chi, it does not mean he has no feats where he has shown amazing skill, far superior to what Shang has done. It's like saying that wolverine is not as good as Shang because most of the time he relies on his claws and HF, even though Logan has already stomped Shang Chi in an H2H fight.  :)

hmmm i was wondering did captain america trained spiderman in one of the comics? because i know shang chi was not the only one.

He probably gave him a few tips at some point.