in order to make historical ends meet , the dispatch of troops to the korean peninsula , which led to the legend of sankan-seibatsu (the conquest of three countries in old korea ), was said to have taken place in the mid fourth century (presumably in 369 , calculated by adding two rounds of the oriental zodiac [120 years ] to the year of 249 as stated in nihonshoki ) and this area was considered as the directly controlled land of the king of wa (japan ) ever since . そのため三韓征伐のモデルとなった朝鮮半島への出兵を4世紀半ば（神功皇后49年（249年）を干支2巡繰り上げたものと見て369年と推定する）とし、以降、当地域は倭王の直轄地であったとした。
