If you found that RAR file on a forum or torrent site, do download or run it. Even if it worked in 2013, today it’s a significant security risk with no legitimate use case.
ChingLiu was a well-known "releaser" or "cracker" active on internet forums (such as Demonoid, KickassTorrents, and The Pirate Bay) primarily between 2010 and 2015. They specialized in releasing Windows software, particularly utility suites, graphics software, and antivirus products.
The "Plus Pack" typically includes additional features or enhancements not present in the standard version. However, without specific details on what the ChingLiu version includes, one can speculate that it may offer: