The files were downloaded from LookAE, a Chinese community, and packed into a DMG File. You therefore may feel a little bit weird with the Chinese language interface. Just click on the DMG file, the plugin then will be installed and assemble with Final Cut Pro perfectly.
Recommendation: In addition to this site, We keep sharing more Premium Assets for Final Cut Pro and Apple Motion from here. And we really recommend to download other App, Software & Game [Full versions] for Mac from MacDownload.ORG.