[Waterluvian]

China publishes an official political map each year, which the companies must treat as canon. They also swapped a contested half-Russian island to being fully China. I think it’s a way to assert some politics at a lower volume.

I can’t say for sure this is that, but I can say for sure that there is tremendous political power in cartography and the simplest act of choosing the label levels for placenames. This move has been done countless times before so I wouldn’t be surprised at all if it’s intentional.