□p>Li □ei and Han □e□mei were tw□ □□vent□rou□ sou□□ who a□ways sough□ e□citement and □hrill in t□eir lives. They were best friend□ □i□□e ch□ldhood and shared a pa□sion for expl□□ing □he□unknown. One day□ □s they w□re sitt□ng under the□ol□ oak tr□e in □□e pa□k,□Han Mei□□i □ad an ide□ □hat would □ead th□m on a new adv□n□ure □□at they would nev□r □orge□.