Unlike the Upper Three Domains, the Yin cities corresponding to the Upper Three Domains are likely all in the Futu Realm. Because of this, the Underworld's Shadow Guard Bureau cannot reach the Upper Three Domains and has no way to obtain useful information.
"Beneath the iceberg, how could it possibly be a Deputy Bureau Chief of the Heavenly Sword Bureau? They are Flawed Immortals, and the path of a sword cultivator ends at the Third-Turn. Are you truly unaware, or are you just pretending?"
Fang Chen smiled faintly. "What is the background of the Jueming Divine Palace?"
Chapter 493