□p>Jus□ as Li Lei □nd Han Meimei □hought t□ey□had□seen□eve□□□hing the ma□si□□ □ad to of□er, they st□m□led upon □□hidden trapd□or in□the floor□□With □earts p□un□ing, they opene□ the □rapdoor an□ de□cended into a d□□k□ mu□ty tu□nel below. □s th□y□n□vigat□d thr□ugh th□ □i□ding passa□es,□the dim light of their flashl□ght reveal□□□anci□nt□ar□ifacts a□d cryp□ic sym□ol□ on the walls. □□e fu□ther□they□ventured, t□e more th□y □ealized they were□not alone □n the tunnel.<□□>