Bitems - Bilingual Items

This mod allows you to configure a secondary language to be displayed in item tooltips. This mod does not display translations for any other elements of the UI - only item names and tooltips will be translated.

In order to change the secondary language, there is a configuration file called 'bitems-client.toml' in the config folder of your game directory - once you change the value for 'secondary_language_key' in this file, you will need to restart the game to see the changes applied. There is also an option here to disable the extra tooltips.

https://minecraft.fandom.com/wiki/Language