Having twice forcibly elevated his realm, Gu Ding suffered a backlash from the realm itself; launching an attack now would bring him no advantage.
It was better to let Su Chen leave for the moment, and once he recovered from the realm backlash, tracking Su Chen down again would not be too late.
Unless Su Chen chose to abandon the Hall of Reincarnation, that was the only way he would shake off his pursuit.
Chapter 1652