At this point, despite Kirei Kandela, the Emperor of the White Dragon Empire, not thinking in the same way as the common people, he pretty much had the same idea. After all, Kirei was one of the few who knew the origins of Long Yi. Being a Giant meant being an unstoppable force in that ancient era. In the beginning, many races within the Multidimensional Plane worshipped the Giants like gods. Even now, some traditionally preserved races still hold reverence towards the Giants.
Kirei had no doubt that Giants could defeat the Dragon Clan. However, he remained cautious about Long Yi's ability to overwhelm the entire Dragon Island.
Afterall, at this point, Long Yi was not yet a true Giant, while Dragon Island was still home to millions of the Dragon Clan.
In fact, after the Dragon Island Council obtained images from a Dragon Soul's memory, they were all shocked.