ye ong se ong ▁to ▁Ga ese ong . ▁Const ruction ▁of ▁what ▁was ▁to ▁become ▁the ▁first ▁section ▁of ▁the ▁G ye ong ui ▁Line ▁began ▁in ▁ 1 9 0 2 . ▁The ▁line ' s ▁name ▁was ▁derived ▁from ▁the ▁names ▁of ▁the ▁two ▁proposed ▁term ini , ▁G ye ong se ong ▁and ▁S inu iju . ▁ ▁Imperial ▁Japan , ▁which ▁had ▁gained ▁the ▁con cess ion ▁to ▁build ▁the ▁G ye ong bu ▁Line ▁from ▁Se oul ▁to ▁Bus an , ▁recogn ised ▁that ▁a ▁railway ▁running ▁through ▁all ▁of ▁Korea ▁from ▁north ▁to ▁south ▁would ▁serve ▁as ▁a ▁means ▁to ▁strength en ▁its ▁influence ▁over ▁Korea , ▁sought ▁to ▁gain ▁control ▁of ▁the ▁G ye ong ui ▁Line ▁project ▁as ▁well . ▁When ▁the ▁Rus so - J apan ese ▁War ▁broke ▁out ▁in ▁ 1 9 0 4 , ▁Japan ▁ignored ▁Korea ' s ▁declaration ▁of ▁neutral ity , ▁transport ing ▁troops ▁to ▁In che on ▁and ▁forcing ▁the ▁Korean ▁government ▁to ▁sign ▁an ▁agreement ▁that ▁gave ▁Japan ' s ▁military ▁control ▁of ▁railway ▁projects ▁if ▁de emed ▁necessary ▁for ▁military ▁operations . ▁The ▁Imperial ▁Japanese ▁Army ▁then ▁established ▁the ▁Tem por ary ▁Military ▁Railway ▁Office , ▁and ▁took ▁over ▁control ▁of ▁the ▁Western ▁Railway , ▁int ending ▁to ▁use ▁the ▁line ▁to ▁assist ▁with ▁military ▁operations ▁against ▁Russia ▁in ▁Man ch uria . ▁The ▁Y ongs an – G a ese ong ▁section ▁was ▁completed ▁in ▁March ▁ 1 9 0 4 , ▁followed