Returning to his room after everything else had been sorted out, Xuan Hao informed his disciples and Feng Chen that he would be unreachable for the foreseeable future, as he had no idea how long it would take him to comprehend the Dao of alchemy this time around.
Just in case it ended up taking a long time, he made sure to inform Feng Chen and his disciples so they wouldn't end up worrying in case he ended up in deep mediation for the next few months.
After all, even if the opportunity from the system might only last for a short time, he was fully intent on making full use of the opportunity to try and comprehend the Dao of Alchemy to the Large Success Realm and possibly even the Realm of Perfection if there was a chance, something that would undoubtedly end up with him staying in his cultivation room for an extended period of time.
