The North Sea water demons led by the three Great Saints of Jinghai were already exposed during the last battle against the Seventh Crown Prince of the Demon Emperor, Congyun.
Ye Zhen worries that the Second Crown Prince of the Demon Emperor, Zhui Ri, upon arrival, might first clear away the water demons in the Blood River to eliminate hidden threats.
Although twenty thousand elite North Sea water demons are not many, they can alter the outcome of a battle at critical moments.
For this reason, Ye Zhen took precautions by having the three Great Saints of Jinghai find suitable hiding places in the Blood River early on.
They established water camps as a precaution and prepared safe waterways for retreat ahead of time, with multiple hiding places.
Therefore, during these days, the three Great Saints of Jinghai led the North Sea water demons on an exploration in the Blood River, discovering hiding spots and preparing escape routes.
