Huawei is clearly in a slump since it can no longer use Google's mobile services. It tries a lot of things, but Android users outside China are so used to Google apps that it can't make up for this disadvantage. I myself use 8 different Google apps every day and I would hate to get rid of them.
Huawei hasn't broken with Android itself for now, as it is an open source operating system, but it has been developing its "own" Harmony OS since August 2019. The word "own" is in quotes because, on closer inspection, it seems that Harmony OS is a rebranded Android.
Of course, it may later become completely independent, who knows, the point is that, being Android-based, so, just as MIUI went up on various phones back in the day, a recording was released that supposedly runs a Xiaomin HarmonyOS.
I don't think the video is real, in more ways than one. In the video we see a phone that we are not at all sure is Xiaomi, just because they say it is doesn't make it Xiaomi, but that's not the biggest problem. The video shows a boot animation. Anyone who's ever done anything custom and dived into this or that kind of modification knows that changing a boot animation is child's play, so I think the video was just a tease.
