Ever since they entered Five Prime City, Yiyi had been gathering information in secret, and Lu Ye had come to understand the situation within the city and the status of the Five Great Families.
He needed to rescue Ying Wuji, but the Five Great Families were unwilling to release him and even intended to plot against him.
So, there was only one thing he could do.
Do unto them as they would do unto you.
Capture one person from each of the Five Great Families to exchange for Ying Wuji.
For him, this was not a difficult task.
As for breaking into the dungeon to rescue Ying Wuji... Not to mention he did not know the exact location of the dungeon, it would undoubtedly be heavily guarded inside. Even with his capabilities, it was uncertain if he could make it out.
Such a vast secret realm, able to remain for millennia, surely has its own foundations.