见义勇为 (pinyin: jiàn yì yǒng wéi, written "jian yi yong wei" or "jianyiyongwei") means (idiom, from the Analects) (usu. of a passer-by who comes across a critical situation) to step in and help; to take brave or selfless action. Below: its meaning, pronunciation, stroke order, and example sentences, so you can learn how to read, say, and write 见义勇为.