What is x master?

As of my knowledge cutoff date in September 2021, X Master is not a specific term or entity that is widely recognized or commonly associated with a particular topic, brand, or individual. It is possible that there may be a specific context or reference that you have in mind when mentioning X Master, but without further information, it is difficult to provide specific details or information about it.

If you can provide more context or clarify what you are referring to when mentioning X Master, I would be happy to try to provide more relevant information or assistance.