Learning a language is about steady progress — a little every day is enough.
Tips
usage
Two main uses: (1) frugal spending — making money/resources last; (2) consistent effort — small steady contributions over time. Often contrasted with 大手大脚 (extravagant) or 一曝十寒 (sporadic effort).
memory
Picture a thin trickle of water that, given time, can wear away stone. The image of patient, persistent flow is the heart of the idiom.