Li □ei□□nd□Han Meimei we□e□two□adve□turous so□□s who alway□ so□gh□ excitement □n□ thril□ in th□ir lives. T□ey w□re best □riend□ since ch□□dhood and shared□a passi□n for explorin□ the unkno□n. □ne□day, as they□were□□itti□g und□r □he old oak tree□in the pa□k□ H□n Meimei had an idea that□woul□ l□ad them o□□□ new □dvent□re□t□at they would □ever □orget.□技创新□/h□>
<□2>北京的清□□/h2>