Probably a shell company set up specifically to sell RF versions of the Meike lenses under a different brand. That way when Canon decides to sue the pants off them, there are no assets to go after. That shell company can just be shut down and another one will pop up. This might end up being the way the Chinese brands get their lenses onto RF.
Brand identification/ marketing would be hard if phoenix legal structures were used.
It is possible that these lens would only be available within China where it would be harder for Canon to enforce any copyright/patent infringements.
Entirely likely that they use EF autofocus with RF physical mount.
The lenses don't have to have the fastest or quietest AF motors and still be competitive vs native lenses.
AF Meike lenses are relatively inexpensive eg 35-85mm f1.4-f2 models range from USD135-USD400 on B&H. The price would be cheaper within China.
We are seeing more hardware eg phones that are only available in China where the middle class market is becoming a big enough segment to support volume - especially at the price points vs native lenses.
Xiaomi, Vivo and Oppo all have china-excluding models for instance and these are not low end models.
For perspective, 2% of China's population is about 30m people who have >USD50k personal disposable income ie prosumers.
Add the number of professionals eg wedding photographers then the addressable market is larger.
Canon may also not go for them as it would mean more MILC body sales in China.
