These three Dao Masters were clearly blustering, putting on a show of force while feeling inwardly apprehensive.
When Su Yu summoned the Golden-Horned Behemoth, those three initial stage Hollow Void Realm Dao Masters struggled briefly before choosing to surrender without a fight.
Following his plan, Su Yu had the Palace Master of the Fenghuang Heavenly Palace lure out two middle stage Dao Masters of the Hollow Void Realm and captured them.
Once five Hollow Void Realm Dao Masters were in Su Yu's hands, the Fenghuang Heavenly Palace no longer posed any threat or potential surprises in his eyes.
Under the guidance of the Palace Master of the Phoenix Heavenly Palace, Su Yu and the Palace Master went deep into the Immortal Sect of the Fenghuang Heavenly Palace to meet with Taoist Master Bai Shi, the remaining Hollow Void Realm seventh-layer master.
This was a Cave Heaven Secret Realm, approximately ten miles in circumference.