Trappedfor139hourswhentheWenchuanearthquakestruck,overhearingrescuersfromthePartydiscusshowtofreehim,Dr.TangXiongvowedtojointheChineseCommunistPartyshouldhesurvive.Helivedandbecameapartymember.LangZheng,the3-year-oldwhosalutedthePeople＇sLiberationArmywhentheysavedhimaftertheearthquake,isateenager.Tenyearssincethequake,Langcontinuestryingtofindthe＂uncles＂whorescuedhim：＂DearPLAuncles,whereareyounow？＂
