Jus□ as Li Lei and□Han Me□mei □hought□they had s□en eve□ything□the mansio□ □ad □o off□r, t□e□ stumbled upon a hi□d□n trap□oo□□i□ th□ floor. With hearts poundi□g, the□ □pened□th□ trapdoor a□d descended into □ dark, must□ tun□el□□elo□□ □□ they navigat□□ th□o□gh the w□nding pa□sages,□the dim light of □□□ir flas□light revealed an□i□□t □rt□facts and cr□ptic sy□bo□s □n the walls. The further t□ey v□ntured, the more□the□□r□alize□ they□were not alone □n□□he tunnel.