He had almost forgotten-hadn't Su Yu come down from the Upper Realm?
Su Yu was only in the Void Training Realm, yet he had managed to descend from the Upper Realm. He must have relied on some special means.
Previously, Qin Wuyou had assumed that Su Yu possessed a large Spacetime Divine Weapon.
But even after refining Su Yu, he had found no trace of a Spacetime Divine Weapon.
Now it seemed that Su Yu had most likely reached the Lower Realm with Elder Xuanji's help!
When Elder Xuanji noticed Qin Wuyou's gaze, he jumped in fright.
"Imperial Scion, Su Yu discovered a long-abandoned interrealm boundary passage inside some ruins. He descended to the Lower Realm through that passage."
Elder Xuanji answered.
"An interrealm boundary passage?"
A flicker of suspicion crossed Qin Wuyou's eyes.
There were only a few fixed passages between the Upper Realm and the Lower Realm, all controlled by the Emperor Clans and the Ancient Churches.
With Su Yu's identity and standing, he could never have descended to the Lower Realm through those passages.
Moreover, even the passages controlled by the Emperor Clans required a Spacetime Divine Weapon to traverse the spacetime turbulence safely and enter the Lower Realm.
Su Yu had no Spacetime Divine Weapon, yet he had managed to enter the Lower Realm. Qin Wuyou found that hard to believe.
Elder Xuanji was, after all, an old fellow who had cultivated for several million years. He recognized Qin Wuyou's doubts at a glance and calmly explained, "Imperial Scion, you may not know this, but aside from the world passages controlled by the Emperor Clans and the Ancient Churches, quite a few interrealm boundary passages also exist. Most were left behind by cultivators of ancient times as routes between the Upper and Lower Realms. As long