...until only the very last level of Malchut of Asiyah was left to produce it... For the different levels are actually powers that spread forth one after the other, each power less than the one before. For the concealment is more intense in the second than in the first (since the second is closer to Malchut, which produces evil). And although “two hundred includes one hundred” and the lower level is included in the upper, the mission of the lower level is nevertheless not revealed there as long as the upper level functions and the concealment has not yet reached the necessary degree of intensity to produce the lower level. Thus as long as the lower level was included as part of the upper level, its offspring did not emerge.
Malchut — Unlocking the Mystery
Kalach Pitchei Chokhmah 49:22