□p>Just as Li Lei a□d□Ha□ Meimei thought □hey had s□en everythin□ □he m□□sio□ had to □ffer, the□ stu□bled upon □ □idden trapdo□r i□ the floor□ Wit□ hear□s□pou□□ing,□they opened□the trap□oor a□d □□s□ended i□to□□ da□k, musty tunnel below. As they□navigated t□rough□the win□in□ passage□, the dim light of □heir flas□light r□veal□d ancient artifa□ts and cryptic symbol□□o□ the□walls. The fu□ther they ventured, the□more □□ey□realiz□d □hey □ere □ot alone in □he tunnel.□□