[Hearing the Immortal Tower's answer, you are extremely astonished. You initially believed that the cultivation system in the Immortal World would be similar to the Upper Realm, having many realms. However, you never thought that there would only be three Great Realms in the Immortal World, which is quite surprising.]
[The Immortal Tower Spirit notices your astonishment and calmly explains that becoming an immortal is difficult, whether in the lower realm or the upper realm. Hence, immortals are considered top-tier powerhouses in the Upper Realm, with their numbers never being too many. Even an Emperor would be considered strong upon reaching the Upper Realm. As for Immortal Kings, there have not been more than a hundred of them since the creation of the Immortal Domain, even with the accumulation of hundreds of epochs. In other words, it's not guaranteed that a new Immortal King would be born after an epoch has passed.]