Aunt Hua entered the Northwest Royal Mansion and handed the Skull Lock and key to a teenage girl.
She placed the key in a box and threw it into a well in the backyard, leaving without looking back.
The box sank to the bottom of the well, and with the stagnant undercurrent, it drifted... A thousand years later, it arrived here, and was eventually fished out by Sally.
"Where is that Northwest Royal Mansion?" Sally, holding the key, pondered what the key locked.
Seeing the girl's determined look when she discarded the key, it must be that she didn't want the Skull Lock to be opened after being used.
Xiaomei was also curious, "Host, do you want to go look for that Skull Lock?"
Sally said, "It's been over a thousand years, the Northwest Royal Mansion might not even exist anymore."
Xiaomei: "We can go and have a look anyway, since we don't have any clues to find Rong Ruo. Why not follow the route of this Skull Key?"