The militaristic advance into the Korean peninsula by Wa (also pronounced "Yamato" in Japanese: ancient Japan) in the fourth century is treated in completely different historical materials of the same historical period such as: Gwanggaeto Stele (Gwanggaeto Stele was built in '411' by King Jangsu of Goguryeo Jian, Jinling Province, China) and the Seven-Branched Sword (Nanatsusaya no Tachi in "Nihon shoki").
4世紀の倭の朝鮮半島進出は、広開土王碑・七支刀など、全く別の同時代史料によって論じられている。