boundary / border

蠛蠓: a kind of biting midge

☰ - 乾 (ken, “qián”) / ☱ - 兌 (da, “duì”) / ☲ - 離 (ri, “lí”) / ☳ - 震 (shin, “zhèn”) / ☴ - 巽 (son, “xùn”) / ☵ - 坎 (kan, “kǎn”) / ☶ - 艮 (gon, “gèn”) / ☷ - 坤 (kon, “kūn”)

snail