春秋戦国時代 しゅんじゅうせんごくじだい the Spring and Autumn period and the Warring States period (Chinese history) n Advanced ➥
敵を知り己を知らば百戦危うからず てきをしりおのをしらばひゃくせんあやうからず know your enemy, know thyself, and you shall not fear a hundred battles exp proverb Advanced ➥