□p>Just as Li Lei a□d□Ha□ Me□m□i thought they□had seen everythi□g□the man□i□n had to□offer, they st□mbl□d □po□□a□hidden trap□oor in the flo□□. □ith h□□rts pounding, □hey□□pe□ed the trapdoor and desc□nded□into □ dark,□mu□ty tunnel □elow.□As □h□y n□viga□e□ t□r□ugh the □inding passages, the dim light of their flashligh□ r□v□aled anci□nt artifa□ts a□d c□□ptic symbols □n the □□ll□.□T□e□□u□ther □hey□ventured, the□more□they□□ealized they were not alone in □he tu□□□l□