1. Your computer is notified that the installed files are dangerous or vulnerable to security.
   - This installer is an installer without viruses and hacking tools and This is a normal file that has completed the Microsoft certification. When a warning is issued by Windows Defender, Please select additional information or options to install and It will work normally.

2. .net 3.5 Problem
    - .net 3.5 is required to run the installer.
Please Install .net 3.5 to solve the problem via the link below
https://www.techgainer.com/offline-install-net-framework-3-5-windows-10-8-easily/

3. While installation, we highly recommend you to keep the default directory where the game being installed. (C:Program Files (x86)YouxiLandROW)