The Chinese text of the game has until now been Geng Jizhi's translation from the 1940s. It is in the public domain, which is why it could ship with the game at all. But its style is archaic by today's standards, and Chinese readers said so — some took the old text for machine translation. It is not machine translation. It is eighty years old.
Book I of twelve has now been translated afresh, from the Russian original rather than from another translation.
It has not been deleted or overwritten. The settings now carry a switch: the new translation, or Geng Jizhi, 1947. Books II to XII still run in the old translation either way, names included.
The developer is Russian and cannot judge for himself whether the new Chinese reads naturally or amounts to literature. If Chinese is your first language, read Book I and say what it is worth. The thread for it: https://steamcommunity.com/app/4955990/discussions/0/590687864233187080/