peopletakeadventureactivitiesinveryearlyyears,sometimesforwealth,sometimesforknowledge,peopleneverstoptheprocessofpromotingtheirchanllegetothenature.theyneverstopadventingduetothecauseofpurchasingallkindsofbenefits.civilizationhassomethingtodowiththegeogrophycondition.fromveryearlyyears,withlessequipmentsandpoorsailingskills,peopleadventsailingonthesea,inriskoflosinglivesinthestorminordertofindmoreplaceforliving,tosolvesocialproblemsuchastheterritorycouldn'tmeetpeople'sneed.andthisadventureactivityenlargedpeople'sassociationallovertheworld.thecourageofovercomingdifficultiesandthebraveryofexploringenablepeopletodevelopcontinually.