Lin Wu, upon hearing this, was utterly confused.
The City Lord didn't tease Lin Wu any further and spoke more seriously, "Do you know much about the Chi Family's affairs?"
Lin Wu organized the known information and replied, "Centuries ago, when alien creatures were still rampant, causing great peril. Someone from the Chi Family sought help from the Thirteen Ridges, and they managed to move seven Ridge Masters to lend their aid in solving the problem. Then five heroic young people from the human race stepped forward, using the power of their entire clans, to seal these alien creatures into a city of their choice before moving it far overseas. That place is the Underground City."