Song Xiaodong indeed left, and before leaving, he helped Qingluan lift the restriction.
Although doing so carried some risk, after all, Qingluan was his enemy and also the princess of the Dark Night Sect. Even if they met again in the future, they would still be mortal enemies.
However, during these days, Qingluan showed no intention of killing him and even helped him achieve Great Perfection. For that alone, Song Xiaodong felt grateful towards her.
Moreover, Song Xiaodong sensed that Qingluan wasn't the type of person completely devoid of conscience. Their positions were different, akin to soldiers from different countries. Even if they held mutual admiration off the battlefield, when on it, neither side would hold back.
