There are various chat types such as [ General / Party / Guild / Gens / Whisper ] in Mu Online. In addition, you can freely set ON / OFF for the corresponding chat type depending on the situation.

General : You can check the general chat window.
Party : View the party chat window.
Guild : You can check the Guild chat window.
Gens : You can check the Gens chat window.
Whisper : You can check the whisper chat window.
System : You can check the system chat window.
Block : You can check the chat blocking UI. [ Block chatting ] If there is a person you do not want to chat with , you can add the person's character name to the block list . Once added to the block list, the chat of the blocked character will no longer be visible .