<□>J□st as Li Lei and Han □eimei thought□th□y had seen everyt□ing the m□nsio□ ha□ to o□fer, they s□umbled□u□o□ a hi□den tr□pdoor in□t□e flo□r. With h□□rts pou□□□ng, □□e□□op□□ed□the trapdoor and de□c□nded into a□dar□, musty□tunnel bel□□□ As they naviga□ed □hrough□□he w□ndi□g□passages,□t□e □im light□o□ their flashl□ght reveal□□ ancient □rtifac□s and cryptic□symbols□□n th□ walls. The further□they □en□ured, the more □hey r□alized they □ere□not □l□ne□in th□□tunnel.