The field mouse was brought back to Grotto Heaven, and as a minor demon with only a Second Level of Dao Foundation, even Chi Yu Zi couldn't muster any desire to kill it.
And the little mouse was quite sensible, not circulating its Mana at all throughout the process. Mana is the foundation of all offensive means; without Mana, everything is illusory.
After some questioning, Gu Wen roughly understood the situation.
First, there weren't only four exceptional demons from the Devil Clan entering the Human Race Earth Realm; Jun Yan's message mentioned those who had had actual contact with various Immortal Sects. The Devil Clan was able to find the location of the Sword Control Sect's secret realm reportedly because someone inside the Immortal Sects had informed them.
Second, the field mouse did not know how many exceptional demons there were, but it remembered that the Saint Heir of the Sky Fox Clan had met with at least eight other exceptional demons.