In fact, Ling Feng is extremely powerful, and he came here specifically for the matter of the illusion.
Once he got the information he wanted, he no longer hid his strength and revealed it. Then, he destroyed Liu Yao City, essentially to silence the witnesses, as he did not want this information to leak out.
Under normal circumstances, he would only need to kill Su Yang to ensure that the news would not get out.
However, he wiped out the entire Liu Yao City. Clearly, he was particularly concerned about this matter, worried that other demon beasts in Liu Yao City might have also seen the illusion. So, he decided to eradicate the entire city to eliminate loose ends.
To put it simply, Ling Feng did not want the information about the illusion to leak, fearing the consequences if it did.
Understanding this, Su Yang knew what he had to do next.
He first found a secluded place, killed a demon beast, and took on its appearance. Afterward, he quickly headed to Saint Venerable Yuqing.
