constituting developing program for economy of the district and organizing its execution；responsible for economy and trade, science and technology, energy, secure production, investment invitation, etc.; statistics and price supervision; oceanic and land transportation, communications, post；developing tourist resources of isles，controlling the marker of tourist resources；constituting developing program for oceanic fishery，developing and protecting oceanic fishing resources，developing oceanic fishing and aquiculture，popularizing scientific fishing technology；responsible for “ 3 agricultures”, “ 3 preventions”