Vladivostok was recently required to be called 符拉迪沃斯托克 on Chinese maps. China claiming that territory back one way or another does seem to be likely.
In September China released a new map using the old Chinese name (Sea Cucumber Bay) rather than the transliterated Vladivostok.
https://www.spectator.co.uk/article/chinas-standard-map-is-a...