When Yu Xian recalled the many Demon Sovereigns who were used as sacrifices by the Demon Emperor, whose names had never even been mentioned, he felt deep sorrow.
They were the core materials for building his Demon King breeding ground.
It would be even better if they were alive.
This was not him talking nonsense, but a fact proven through his own experience.
Because those Demon Sovereigns who were said to have retired and ceased to concern themselves with worldly affairs, who had not shown their faces again, were all well kept in his breeding ground.
Probably because they were alive, their vitality was stronger, making them more effective in nurturing the flesh and blood of lesser demons.
On average, one Demon Sovereign could generate a revenue of between ten thousand and fifty thousand Demon Kings for him.
