During the last reconstruction of the Country-protecting Immortal Artifact, every time it was "maintained," it would bring a significant fixed income! And now, another opportunity has arisen.
King Monroe and his colleagues racked their brains, searching for ancient Country-protecting Immortal Artifacts in every Immortal Country of Master Howard. If they couldn't find any, they would think of new ways to install new ones as much as possible.
After all, the Heavenly Palace has now returned, and the Immortal Race needs powerful martial force.
What Sir Sun wanted were the core components replaced during the maintenance of these Country-protecting Immortal Artifacts. Among the twelve Immortal Countries under Master Howard's name, three of them had ancient National Guardian Artifacts, and two others...barely counted as "frontline" or "strategic locations," where new National Guardian Artifacts could be installed. So, altogether five of them!
What a big business!