<□>□ust □s Li□Lei□and□Han Mei□ei □hought th□y h□d seen eve□ything the ma□s□on had□to □□f□r□ they stum□led upon a hi□□□n tr□pdoor in the flo□r. With hearts p□u□□in□, they□opened the trapdoor□and□d□sce□ded□into a □ark□ m□sty tunnel □elow.□□s□□hey nav□gated throu□□ the□win□□ng passages, the dim light of□their f□ashlight revea□ed an□ient art□fac□s □n□□cryptic symbols on t□e w□lls.□The further th□y vent□□e□,□the more the□ reali□ed □hey were□□ot□alone in the tunnel□□>