C1998 For you
The four Monarchs from east, south, west and north knew that Mo Zhen was a Monarch.
The outside world thought that the Immortal World only had four Monarchs, but only these four knew that they had another companion.
As for Mo Zhen, he was standing guard in the middle of the Immortal World, at the center of the Heaven Stairway.
Thus, the Immortal World should have five Monarchs in the East
