I am finally out!
After cultivating his soul to the Ethereal Treading realm, Zhang Xuan had left the residence and continued moving straight, and soon, he managed to escape from the royal palace.
Upon leaving the palace, he scanned his surroundings and swiftly deduced where he was.
After which, he suppressed his aura to the bare minimum and swiftly made his way through to the main entrance of the royal palace and then the main hall where the banquet was held.
As soon as he entered the main hall, he immediately darted back to his body before heaving a huge sigh of relief.
In his short journey, even though he failed to find the Bodhi Saint Tree, he did manage to compile the Ethereal Treading realm Heaven's Path Soul Art, so it wasn't a complete waste of time.