MaJapan akatumidza zita reSingapore, kubva muchiJapanese, kana kuti "chitsuwa chokumaodzanyemba chakawanikwa munguva yaShōwa", uye vakachiva kusvikira vaBritain vatorazve chitsuwa chacho musi wa12 September 1945, mwedzi mumwe pashure pokunge maJapan akundwa
. Zita rokuti "Shōnantō" rakanga riri, panguva iyoyo, romanized se "Syonan-to" kana "Syonan", apo mavara 昭南 chaizvoizvo anoshandura kuti "Chiedza cheSouth".