How to install the downloaded SISX game?

The landlord promised me that he would help people who don't understand next time. Solution: Select your installation file (SISX), cut or copy it, and put it in the Installs folder of your E drive or F drive. Then remove the phone USB. In the installer, you can see. Any SISX files are placed in this folder. The mobile phone system can recognize it. Answer, please send me a message if you have any questions.