In the end, Zhou Tian used his spiritual power to bind the Headless Knight, preventing him from pursuing with full strength. At the same time, while fleeing, he was also attracting the attention of other monsters. In this way, even if the Headless Knight wanted to chase, he had to contend with a multitude of monsters blocking his path.
In reality, it went just as Zhou Tian had thought, the Headless Knight made a decisive decision to give up the pursuit at that time.
It's not that the Headless Knight had changed his previous idea. In fact, when he discovered that Zhou Tian was aware of the characteristics of the Undead Domain, the Headless Knight had already made up his mind that he would not allow Zhou Tian to leave alive. And even now, the Headless Knight had not changed his mind. If there was a chance, he would still be thinking about how to eliminate Zhou Tian, his foe.