YangLeigraduatedfromPekingUniversity.Shetaughtasavolunteerteacherinahighschoolinapoormountainvillageforayear.Lifeinthemountainwasanewexperienceforher.Thefoodtherewasverysimple.Peopleateporridgethreetimesaday.Wecan'timagineit.Butshesaidsheenjoyedhertimeasavolunteerteacherverymuch.Becauseofherwork,shecouldopenupherstudents'eyestotheoutsideworldandgivethemagoodstartinlife.Andshewouldreturntotheareaasamathteacherafterfinishedherstudies