buâ-liān磨煉

to temper oneself

to temper oneself; to steel oneself; self-discipline; endurance

English Wiktionary, “磨煉” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E7%A3%A8%E7%85%89 · confidence: Medium (Wiktionary, Hokkien)