Thegateoftheirongridstronglyresiststheinvasionofforeigncountries.Thecitypheasantsaretall，firmandsteep，withdeeptrenchesunderneath.Thebrookaroundthecastlewasbubbling，andtheguard'sTowerappearedinmidair.
Asmostpeoplehavesaid，thedawningempireisdying.Thisoncehugeempireisnowlikeanoldmanwhohasfallenintothegraveandisabouttoenterthegrave.Butevenso，thedawningempireisstillthemasterofthislandonthebrightside，andeveryonemustobeythelawsoftheEmpire.ItwasinthissituationthatasemielfnamedNavierkilledJackTroy，thecityownerofBuyicity.Jack'sson，littleJack，vowedtoavengehisfather.Hefoundthefamousswordsmaster，MelSmith，tobuildhimselfagreatswordnamed“vow“，andhewastousethebigswordtocutdownhisenemy'shead.Thenhesetouttofindthehalfelfwhokilledhisfather.
JackandNavierfinallymetintheEmeraldCityofthedawnEmpire，andthebattleoftwopeopledestroyedhalfoftheEmeraldCity.Notlongafter，countlessrebelsenteredtheruinedEmeraldCity，andthedawnEmpirewenttothecountry.Theserebelshavecarveduptheentireempire'sterritoryintheEmeraldCity，andeachofthemiskingofindependence.Countlesslargeandsmallcountrieswereestablished，andsoonafterthat，amarathonwarlastedformorethan300yearsbetweenthesecountries.Finally，amannamedNealendedthewarandbuiltanempirecalledthecrescentmoononthelandthatbelongedtothedawningempire.ThecrescentEmpireattachedgreatimportancetoalchemyandengineering，andinvestedalotofmanpowerandmaterialresourcesinthisarea.Eventually，alchemistsandengineersbuiltahugewarmachinenamed“guardianoftheEmpire“.Soonafterthat，theimperialguardslostcontrolanddestroyedtheentireempire.Thecrescentempirewasdestroyed.Andtheimperialdefenderswerecompletelydestroyed.
Afewyearslater，amancalledSaman，withhisownlittlebrothers，overthrewtheownerofthecityofnorthernborder，andthenwentsouth，andfinallyestablishedhisownempire，theSamanempire.Samanwasnotcontenttoinherittheterritoryofhispredecessors，andconstantlydispatchedtroopsacrossthedeadmountainstofindnewland，whilevigorouslydevelopingtheshipbuildingindustry.Theboatmenbuiltanironvesselthatcouldsailonthesea.SamanIVnameditthe“neversinking“.ThesonofSamanthaIV，thefutureofSamanthaV，openedtheshipandenteredthevastsea，anddisappearedforeverinthedeepsea.
ShortlyafterthedestructionofthesaamanEmpire，morethanadozenlargeshipsdroveoutofthesea，themenfromanothercontinent，whoseleaderwasthesonofsaamanIV，thesonofsaamanIV，whoseoriginalnamewasLowmanSaman.Romanwasborntodestroytheimperialguardians.Whenhelearnedoftheexistenceoftheguardianoftheempirefromhisfather'smouth，hewishedtoseeit.Now，hebroughthiscaravantothemainlandwherehisancestorsoncelived.Atthistime，themainlandisstillfullofdisputes，andpeoplearestilllivingindeepwater.
RomansawthedamagedEmpireguardiansplacedinthedarkvalley，andamonghim，amancalledTriercalledhimselftorepairtheimperialguardians，andRomanagreedtohisrequesttorepairtheimperialdefenders.Trierdidit，andherestoredtheguardianoftheEmpire.Whenheenteredtheoperatingroomoftheimperialguardians，hebecameawareoftheimperialguardians，andhissoulleftthebodywiththeimperialguardsandbecameawhole.
RomanmadeTriermorepowerfulinitsempireguardian，butTrierrefused.TheangrymankilledTrierandkilledothers.Thenhefoundhisboatandfoundhisboatalittlesmallforhisbody，sohethreatenedtobuildahugevesselforhimbytheseaside，andeventuallyhereturnedtohishometownintheship.Andthefarmerswhohadmasteredthetechnologyofshipbuildingconstantlybuiltboatsandeventuallyfledallthewaytothedepthsoftheunknownsea.Thepeasantswentinalldirections，andoneofthemcametotheNgauTauIsland，whereourprotagonistwaslocated.Thisisanislandthatlookslikeanoxhead.
Afterlearninghowtobuildaship，theherotookallhisfamilypropertyandranaway，leavingtheprotagonistinhisinfancyandhissickmotherinbed.Itwasnotlongbeforethemotheroftheprotagonistcametotheworld，andtheprotagonistintheinfancywasadoptedbythepeasantandbecamehisson.Manyyearslater，theprotagonistgrewupandwascuriousabouttheseaandtheworldoutsidethesea.Finally，hesatonhisownship，lefttheislandofoxheadformanyyears，andwentdeepintothesea.
Hereisabriefintroductiontoourprotagonist，namedCookHook，twentyyearsold，proficientinshipbuilding，fishing，makingtraps，somesimplefightingskills，andmakingsomesimplemedicaments.
Cooklosthiswayontheseaandeventuallylandedonanuninhabitedisland.Atthesametime，thedisputeoverthedawnwasover.AnempirenamedColincameintobeingundertheswordofColinJordan，andColinsentcountlessfleettospreadacrossallsides，tryingtofindhisescapedbrotherMeadeYordanonthesea.ButwhathemightnotexpectwasthatMeadJordancametotheseaforseconddays，andeventuallydiedontheship，andtheboatmenthrewhisbodyonanunmannedislandandleft.ThisledtoCook，whoreturnedfromfishingonthesea，lookingatthedeadbodyinaveryperplexedway.
“Wheredidthebodycomefrom?“
HefoundamapinMead，amapofthewholelandofthedawn，includingthegeographicalconditionsoftheoffshorearea.Thereareafewbooks，afewbooksonengineering.Whilesearchingforthedawnofthemainland，Cookreadthesebooks.ThetextofthedawningcontinentisquitedifferentfromthewordsofthetauruIsland，butthefatherofCookisoriginallyadawningcontinent，soCookcanunderstandthewordsofthedawncontinent.Inthisway，Cooklearnedengineeringandfoundthedawnofthemainland.
Cooklookedatthecityinfrontofhim，nearHaicheng，acitybuiltonthePearlIslandoftheTenglongRiverintoHaikou.Allkindsofpeopleinthecitycamefromalldirectionstofindthebountyhunterwhohadalreadydiedonthesea.Cookknewverywellthatthemanontheportraitwasdead，buthedidnotspeaktoanyoneaboutit.Onthecontrary，heplayedthebountyhunterinapretendingmanner，andwaspreparingtojoinabountyhunterteamnamedRobin.ItriSmith，thebossofRobin，isthedescendantofMelSmith，thelegendaryswordmaker.Thelegendaryswords，Mel，createdsevenswordsinhislife.Theywere“massacre“，“terminator“，“vow“，“decapitation“，“destroyer“，“death“and“Mel“.Finally，thetwohandedsword，namedafterhim，finallyreachedItri'shandandbecameherfamousweapon.
IfCookwantstojointheRobin，hewillacceptthetestfromtheRobin.