Optimized a number of multiplayer-related issues and game logic problems.

Optimized multiplayer logic. Room information is now visible, and it supports display in multiple languages.

Custom multilingual translation is now supported. If you are not satisfied with the translations, you can edit the files yourself, or use files edited by others. In theory, any language whose characters can be displayed by the font will be supported.

Fixed the client-side movement guide line. Fixed an issue where equipment would be removed on the client side during trading. Equipment now uses IDs. In multiplayer, you can now enter guilds, arenas, and other battle scenes to encounter and fight each other.

Fixed equipment stat/attribute issues.

Fixed client trading and refresh issues.