When Hongjun was awarded the holy title, he gave out seven Hong Meng Immortal Qi totally, six of which were sent to his disciples, respectively the Three Pure Ones, Goddess Nvywa, Jieyin, and Zhunti, while the last one was snagged by Minghe. However, if the Mysterious Sign of Heaven from the reincarnation of Houtu was the same as that from other Sages, others would naturally know that what Minghe achieved was the Zenith Heaven Golden Immortal of Origin rather than the Sage.
Therefore, Minghe must become a Zenith Heaven Golden Immortal of Origin before Houtu rose to a Sage. The Law of Spiritual Beings just entered into the sixth realm, still far from the seventh realm of the Realm of Origin. But the Law of Blood was different from the Law of Spiritual Beings. It was the Law of Origin of the Blood Sea, so Minghe was extremely successful in the enlightenment of it. And now he was near the seventh realm. Hence, reaching the Realm of Origin just required the last step.