The Moon World was one of the very few off shore worlds that Ryu's Tatsuya Clan controlled. Or, rather, in this case, his Tatsuya Clan by proxy of his Ice Phoenix Clan. And, yet, it was a world where the greatest cultivator that could be born would be of the mere Dao Pedestal Realm.
It was one thing to invest in a Ninth Order Sect where a Dao Pedestal Ancestor would be the best you could hope to find if said Sect was in your world. However, it was a completely different matter to invest in an entirely separate world. So the question was… Why?
The obvious answer was for resources. Having a large source of lower level resources was important for any Clan or Sect. There was only so much you could find in a single world. Having many subordinates you could pool resources from was ideal for a super power. And, considering the Moon World was a world of extreme yin, it made even more sense that the Ice Phoenix Clan would place such great emphasis on it.