After the Soundwave flying spirit beast flew into the sky, it would release a sound wave and transmit the Dragon of five evils's order. After the other Soundwave flying spirit beasts heard it, they would also spread out at the same time. Therefore, it did not take long for all the spirit beasts in the entire five evils Savage Land to receive the Dragon of five evils's order and start to pursue the cultivators. This was also the reason why the cultivators 'corpses were strewn in the wilderness.
Of course, spiritual beasts also had their own intelligence. In order to intimidate human cultivators, the Dragon of five demons had a regular pattern even when it came to killing cultivators. Every day, it would only kill two cultivators above the earth rank as a warning!
