ぐこう 愚公 LinksSentence search for 愚公Sentence search for ぐこうKanji details for 愚 and 公Edit in JMdict Noun1. Yu Gong (main character in the 4th century BC Chinese fable "The Foolish Old Man Removes the Mountains"); Yúgōng; YukongCharacter Discussions Log in to talk about this word.