dism /image:C:\mount\windows /add-package /packagepath:"C:\Packages\...cab"
.cab (Cabinet file), used for offline or scripted installation via Windows management tools. Installation Methods and Server 2016+)
In modern Windows versions (10, 11, and Server 2016+), language packs are modular. The "Basic" package is the for the Chinese language. It typically includes: and Server 2016+)
Input the following command to download and enable the basic Simplified Chinese features directly from Microsoft servers: and Server 2016+)
The file you mentioned is a Feature on Demand (FOD) package for Windows that provides Simplified Chinese (zh-cn)