It was because He Song did not want to turn the place where he was into ruins.
A Nascent Soul Grand Perfection Cultivator unleashing a full-power strike from their own reserves could likely destroy half of the Immortal State Mansion.
The mansion where He Song resided was quite spacious, but if hit head-on by a Mana Blossom, it would probably reduce everything within the mansion to dust.
Even if a Ten Thousand Swords Returning to Origin Array had been set up around the outskirts of the mansion, it would still be the same.
After all, the defensive capabilities of the Ten Thousand Swords Returning to Origin Array were strong,
but it was also spherical.
An attack like this, appearing directly inside, could indeed be defended against,
but within the area covered by the array, everything inside the sphere would be powerless to resist a full-powered strike from a Nascent Soul Grand Perfection Cultivator.
