(PS: I've been busy moving the last few days, and with so many things going on, I'm only just now seeing this.)
With the submission of the Thousand Gu Demon Sect's two Martial Saint Realm experts, the vast majority of the sect's other powerhouses wisely chose to follow suit and surrender to Shu Feng. The few unyielding ones were summarily executed.
Shu Feng also tossed the Thousand Gu Demon Sect Leader and the other Supreme Elder into the Base Space, only letting them out after they were brought under complete control by the central controller.
The three Martial Saints—the Thousand Gu Demon Sect Leader, Gu Ye, and Gu Feng, who possessed the Hidden Gu—all came under Shu Feng's command and became his subordinates.
'So this is the Thousand Gu Demon Sect's Treasure Vault. Truly worthy of being one of the Five Great Demon Sects of the Great Zhou Demon Country! Their foundation is incredibly deep!'
