m̄-tsiânn-sann-nňg毋成三兩

of little use

of little use; not amounting to much

English Wiktionary, “毋成三兩” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E6%AF%8B%E6%88%90%E4%B8%89%E5%85%A9 · confidence: Medium (Wiktionary, Hokkien)