About 55 km to Tam Ky city and 110 km to Hoi An city, considered as the head quarter of politics, military in Military Zone 5 in the period of anti- American war (1960-1973). Nuoc Oa historical military base  was a place where took place many important revolutionary meetings and gave training courses to cadres of the whole province. This contributes to the victory in signing of Paris Convention 1973 and forward the liberation of the south.