Qinna or Chi’na is the area of a Chinese martial art that deals with what the Japanese systems would see in Jujitsu or Aikido. (And perhaps more.

While similar it has a different flavour to it than the Japanese approach.
“Different” folks just a different flavour.

It has been commented on this forum before that pretty much all Chinese systems have some Qinna in them. Some are heavier with it than others.
The two main forms of Bagua went separate ways when the founder of Bagua taught a person strong in striking bagua and a person strong in Qinna. They each focused Bagua on their strengths.
Where I am going with this is that as a system that came from China Uechi has many Qinna moves. Those who have studied Jujitsu as well as Uechi find them to be a great match.
I read once that when Uechi Kanbun Sensei began teaching in Japan he of course drew martial artists to his school. As many of these where well trained in the grappling arts of Japan his school focused on the striking areas to fill in their gaps or holes.
Interesting that today some cross train in grappling styles to fill that hole in Uechi. What goes around comes around.
Of course there would be some claiming now that is not Uechi when really it is or it should be.
Odd that some cannot see the depth and riches that are in Uechi and choose to turn a blind eye claiming, things that come straight from the Uechi Kata, are not Uechi. Baffles me greatly but that is another thread.

And my round about point is that Uechi is a very hands on system so once you get a hold of them then you should be able to do things with them. And this is where Qinna comes in.
An aside: Some don’t like Taiji and yet it is rich with Qinna. When my friend Rick Bottomley asked Joseph Chen (Chen Taiji) when they would learn Qinna, Joseph replied you are learning Qinna. Taiji is Qinna.
So along with our striking I see that Uechi should also be rich in Qinna.