Board Thread:Theories and Speculation/@comment-35622277-20180413051724/@comment-734582-20180413060133

Given the mythology behind Urashiki, i think indeed that the time freeze is some sort of pocket dimension projection. Unlike Kamui which grants access to new space, Palace of the Dragon seems to give access to a new time. Itachi was able to manipulate time and space in his genjutsu dimension, so it's possible that Palace of the Dragon is some sort of alternate form of that (Manipulation of time in a physical space, rather than genjutsu space).