After pondering for a while, Long Tianyu suddenly saw a person dressed in servant's clothing, tiptoeing and slipping into the Art Courtyard.

He might not be familiar with the faces of all the servants in the mansion, but he could still tell when it was a complete stranger and was not the normal staff.

"Have you ever seen that person before?"

Long Tianyu asked, when he saw the filthy figure disappear completely behind the gate of the Art Courtyard. ...