C929 In the Fire He Took the Demon's Grave(part I)

Everyone was glad that Dongfang Qingyu was here. Otherwise... With so many sacrifices, even a large gang would suffer. At the entrance, they had used 1,500 Corpse Devil, and this was due to everyone's rich experience. If one's observational ability was slightly lower, 2,000, 2500 test subjects would always be needed.

In the passageway, around 2,000 Corpse Devil were used. In other words