A human being has countless micro organisms living on their body. They rely on us to feed and live. We are their world. That doesn’t make our existence or theirs any less real. In DE, their treasures possessed their own world and in those worlds, life could be sustained. In MW, people built their own worlds. Their worlds aren’t any less real. Consider this an advancement of the true or false Dao. You may see the world as false, but it is still true. Although it does piss me off that all this grand stuff we’ve been learning about is just a simple sect master’s life.