然后，谢燕就被派往北方军区，在那里他会找到答案，和解决这个谜题。butDaiGuan知道，这个谜题的答案并不容易得出。
他一步一步地走向他的办公室，在那里，他将与谢燕讨论他们对北方军区的行动方案。hewalkedbacktohisoffice,lostinthought,hismindracingwithpossibilities.
whenhearrivedathisoffice,heclosedthedoorbehindhimandbegantopacearoundtheroom.“weneedtobecareful”,hesaidtohimself，“我们需要确保我们的行动不会被发现”.hestoppedpacingandlookedoutthewindow,hiseyesfixedonsomepointinthedistance.
“whatifwe‘retoolate？”hethoughttohimself，“whatifthey‘vealreadydiscoveredourplan？”heshookhishead,tryingtopushthosethoughtsaway.buttheylingered,hauntinghimlikeaghost.
heturnedbacktohisdeskandpulledoutamapoftheregion,spreadingitoutbeforehim.“weneedtomovequickly”,hesaidtohimself，“weneedtogatherasmuchinformationaspossiblebeforewemakeourmove”.hestudiedthemap,hiseyesscanningtheterrain,searchingforanyweaknessorvulnerability.
butdespitehisbestefforts,hecouldn‘tshakethefeelingthattheywererunningoutoftime.thateveryminutecounted,andthatonewrongmovecouldmeandisaster.heknewhehadtoactfast,beforeitwastoolate.
“let‘sgetmoving”,hesaidtohimself，“wehavealotofworktodo”.then,withanewfoundsenseofdetermination,hesettowork,hismindfocusedonthetaskathand.