The two of them were living in the same body, so su Wu could naturally sense her reaction.
When he heard song qingxiao's expression of relief, he was stunned at first, but then he quickly understood why she was relieved.
In addition to asking for directions, song qingxiao also wanted to use him to test the pursuers.
Su Wu loathed the people from the martial arts Research Institute of the heavens beyond heaven. Shi qiuwu was in the same realm as him, so in order to prevent his aura from leaking out, he had been hiding while song qingxiao and Shi qiuwu were confronting each other in the sea of stars.
Although su Wu's physical body had died, his soul breath was still there, and his realm had not changed.
If tianwaitian and shiqiu were chasing after song qingxiao, su Wu would not have responded.
Since he had replied to song qingxiao, it meant that she had temporarily gotten rid of her pursuers. That was why she was relieved when she heard su Wu's voice.