Right now, the lethal flood was gradually invading the middle level and the bottom level of the underground fortress from the top level of it.
Many space pirates and Immortal Cultivators had noticed the incoming flood and sealed the entrances and exits of the rooms by force, but the blockage was not waterproof. It was not long before they were crushed by the pressure of the flood.
However, the underground fortress was enormous in scale and complicated in terrain. It was not entirely drowned by the flood so quickly.
Bai Kaixin had grown up in the underground fortress. Naturally, he knew that countless brutal beasts lived within the Nether River. Therefore, Lei Dalu and him did not head upwards against the flood but downwards to avoid the flood and search for a possible shelter.
The main force of the Immortal Cultivators led by the Black King, on the other hand, was marching upward, trying to flee as quickly as possible!
"Not good!"
