Scenario 1:
Scenario 1: You want to play Minecraft in Traditional Chinese (Hong Kong), and other add-ons offer "zh_HK" language.
Add this resource pack to your global resource packs, then restart Minecraft.
Then select Traditional Chinese (Hong Kong) in the language settings.
Scenario 2: You want to play Minecraft in Traditional Chinese (Hong Kong), but other add-ons only offer "zh_TW" language. Add this resource pack to the global resource pack, and then select Traditional Chinese (Taiwan) in the language settings.
The original Traditional Chinese (Taiwan) content has been changed to Traditional Chinese (Hong Kong).
So, apart from the new content in other add-ons, everything else is in Traditional Chinese (Hong Kong).
Scenario 3: You only want to play in Traditional Chinese (Hong Kong) in a specific world.
Select Traditional Chinese (Taiwan) in the language settings, and then add this resource pack to that world.