江戸の敵を長崎で討つ

えどのかたきをながさきでうつedonokatakionagasakideutsu

expression · godan verb

1. to hit someone where they least expect it
2. to take revenge on someone in an unlikely place
3. to get revenge on someone in a different contest
4. to attack the Edo enemy in Nagasaki

Study it in Yanamino