After subverting the Fox Venerable Qingqiu, Yu Xian did not rush to recruit other Demon Sovereigns as his agents.
He was not well aware of the information about the many Demon Sovereigns, and turning up unannounced would not likely earn their trust. Nine times out of ten, it would only add one more Demon Sovereign corpse to his Demon King breeding ground.
Hence, he had to let the bullet fly for a while.
He would wait until he could see the results from Fox Venerable Qingqiu, this experimental field.
Those interested Demon Sovereigns would naturally seek him out, willing to pay a small price for freedom.
As for the Demon Sovereigns who did not come looking, they were part of the conservative and stubborn faction within the Demon Race, determined to fight to the death.
These Demon Sovereigns could only be utilized as waste material, becoming fertilizers for the Demon King breeding ground.