You guys are correct that there are gestures already present in Miui 9, 10, and 11. But these are miui's own gestures and not the ones from Google. The one that the author is talking about, are the new Google gestures and these are finally being implemented into Xiaomi's miui since Google's forcing companies to implement this in there operating os's. The main difference is the navigation bar that is present and the way to go to the previous apps by swiping on the navigation gesture bar. 

It is correct to say:
"Android 10 presenting MIUI gestures"......

What is this?
It's already there in MIUI 11 even with Android 9...

Are you all gone crazy 😲.. seriously. All features are already available on my miui 11. What's so new 🤔

Hi. I am Kiran raj from Kerala. I am using poco f1 which got updates on miui 11. Now from tomorrow night I am facing a charging issue while I charge my phone . once the adaptor is plugged in with the cables to my phone it charges for 5/10 min and the the notification light starts blinking softly and the charging gets stopped automatically and then the edge of the charging cable which is connected to the phone also get heat

These gestures are already on MIUI 11 which already launched 6 months nack, get back with some new features

To the previous commenters, it's clearly mentioned that MIUI 11 will soon get the MIUI 10 full screen gestures. That surely means MIUI 10 had those gestures! There was no need to mention that you've MIUI 10 with those gestures enables.
Secondly, I've MIUI 11.0.3 and it already has these gestures. I request you to please recheck this fact!

Quote from: Dagmar on April 08, 2020, 16:43:49
Wasn't that already in the MIUI 10? I use it since November

Could be a version of MIUI based on an older Android version. There's not much info the Source page. I've reached out to Xiaomi on this.

It already was on android 10

Wasn't that already in the MIUI 10? I use it since November