It relates to Amber v5.1, which includes native EET (Enhanced Edition Trilogy) compatibility and fixes for text formatting.
This file is used to translate or provide localized text for the mod in Simplified Chinese. How to handle this file: Amber.7z
It is associated with a modification for a game (likely Baldur's Gate or similar Enhanced Edition game) posted on The Gibberlings Three forums. It relates to Amber v5