If the Horned Dragon before him was truly a Dragon King, it did not make sense either.
A King was at a level far beyond the Perfected One realm.
Any King could rule over a territory with absolute dominance!
The Great Jin Immortal Kingdom was ruled by a supreme Immortal King and had more than a thousand cities under his rule. Its territory was vast and the Dragon Abyss Star was only an insignificant remote star beneath Green Cloud County.
The power and authority of a King was evident!
Logically speaking, any King could suppress the three Perfected Immortals with ease.
However, the Horned Dragon before him had not used any techniques that belonged to a King the entire time and merely fought against the three Perfected Immortals with its powerful body.
The three Perfected Immortals were puzzled as well.
That was also the reason why they did not retreat right away.