gōa-chúi-chîⁿ外水錢

extra money earned on the side

extra money earned on the side; relief funds from abroad

English Wiktionary, “外水錢” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%A4%96%E6%B0%B4%E9%8C%A2 · confidence: Medium (Wiktionary)