Hello Junjie,
FreeMASTER Lite is just a server which listens on TCP port and serves clients with JSON-RPC or HTTP requests. It is normal that it does not print more messages to console. When it is running, you can create your JScript or HTML application which will communicate with the server.
Run the FreeMASTER Lite without any parameter (e.g. by using an installed icon in the Windows Start menu) to open a localhost web page with more information about FreeMASTER Lite.
If you want to use a graphical interface instead, use the FreeMASTER desktop application as demonstrated in this introduction training.
For creating own dashboards and other customization (which will also give you some information needed for FreeMASTER Lite), see this training.
And of course, it is always a good idea to read a user manual.
Regards,
Michal