C757 The calculation of the Great Elder

Because of the backlash from Bai Zhanxiong's cultivation previously, his body was in a terrible condition, which was why he did not dare to leave the secret room.

Luckily, the core formation soul of the Cosmos Sack Formation was forcefully summoned. Although it disturbed him at all times due to his cultivation, at least he was in the later stages of cultivation. So