Ka kammala wannan magana: Bayan da ya ci Mulkin Melayu a Sumatra a shekara ta 1290, Singhasari ya zama mulki mafi iko a yankin. Kublai Khan, Khagan na Daular Mongol kuma Sarkin daular Mongol Yuan, ya ƙalubalanci Singhasari ta hanyar aika da jakadu don neman haraji. Kertanegara na Singhasari, ya ƙi biyan haraji, ya zagi jakadan Mongol, kuma ya ƙalubalanci Khan maimakon. A cikin martani, Kublai Khan
ya aika da wani babban jirgin ruwa na jiragen ruwa 1000 zuwa Java a 1293.