A specific drama unfolded for (Japanese, Simplified Chinese, Traditional Chinese). Their language packs for AutoCAD 2018 required additional font files ( @msmincho.ttc , simsun.ttc ) and IME support. If those were missing, the pack would install but every character would appear as ??? or squares.
Q: What is the difference between the AutoCAD Language Pack and the AutoCAD localization? A: The AutoCAD Language Pack is a software package that allows users to change the language of their AutoCAD software, while AutoCAD localization refers to the process of translating the software into a specific language. autocad language pack 2018