Okyo means that he considered himself equal to Senshunkyo (Qian Xuan) (a painter during the end of the Song Dynasty - the beginning of the Yuan Dynasty), and it seems that he intended to draw pictures at the same level as the Chinese virtuoso.
「応挙」の意は「銭舜挙（中国宋末-元初の画家）に応ずる」ということであり、中国の大家に劣らぬ水準の絵を描こうとする意が込められていると思われる。