Since Stelladom was supposed to be sealed off, Himmel Soan's speculation was probably correct.
The five places should form one giant formation because five separated formations were never going to seal off a continent.
Since the barrier had existed for so long, it was probably because of this giant formation. Otherwise, people like Emperor Tzi would have broken it a long time ago.
Five meteorite cores… Wasn't that too high a cost?
A meteorite core was the essence of a planet and contained all of its energy. Once it was removed, the planet would soon reduce to a lifeless place like Mars.
Mars's meteorite core was broken and spread all over the planet. Himmel Soan brought those broken pieces back to Earth and used them for his recovery. After that, he gave the remains to Roams, who made them into the Soanian swords.
Himmel Soan had never seen an intact meteorite core in this form before.