He had noticed that the black skeleton mentioned something about the Sky of Heavenly Sword and Sky of Freedom, and even though he didn't understand what those words meant, he was certain that it had something to do with the Firmament.
Furthermore, the black skeleton had initially intended to harm them, but after seeing the crimson pendant he was wearing, its attitude suddenly changed. This meant that it was able to recognize the crimson pendant, and there was a good chance that it was acquainted with Luo Ruoxin!
However, the black skeleton stood unmovingly on the spot, not responding at all
Knowing that the black skeleton wasn't going to answer any of his questions even if he were to probe further, Zhang Xuan shook his head before retreating from the area.
Together with Du Qingyuan, they headed back in the direction where they came from. With a slight moment of disorientation, they soon reappeared above the altar.
"Let's return."