Just as Li Lei □nd Han Me□m□i thought they □ad seen eve□y□hi□g □he m□nsion ha□ to offe□, t□e□□stumbled upon □ hidden trapdoo□ in the fl□or. With□□ea□ts□pounding□ the□ opene□ t□e trapdo□r a□d □escended into a d□rk, musty t□nnel be□ow. As t□ey navigated throu□h□t□e winding pa□sa□es,□t□□ □□m □□ght of their□□l□shlight re□ealed ancient artifacts and□c□yptic□s□□b□ls on □□e wall□. Th□ fu□th□r th□y□ven□ur□d, □he more they r□ali□ed□they were not □lone in□the tunnel.现□化设施的应用□/h2>