"So the 'Town Lord of Atalan City' isn't actually from the 'Rodriguez Royal Family', but is a descendant of the royal servants?"
After reading the diary, Su Lun suddenly understood.
Having returned to his room in the inn and with no one coming to look for him, he spent his time perusing the texts he had taken from the Town Lord's mansion.
Then, he discovered an ancient family diary.
After reading it, he found out that the current Town Lord was, in fact, a pretender, a destitute member of the royal lineage.
Originally, the true Rodriguez Royal Family was defeated and fled overseas, the branch Su Lun knew about in Emperor Luying's empire. Meanwhile, a servant of the royal family had stolen some royal treasures along the way, leading to today's Atalan Town Lord.
That servant had also recorded this experience in a diary, which was left behind.
Only then did Su Lun understand why the box containing "Medusa's Serpent Hair Scepter" had not been opened for a thousand years.