soo-tōo疏導

to dredge

to dredge (clear the bed of an area of water); to remove obstructions; to guide through persuasion

English Wiktionary, “疏導” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E7%96%8F%E5%B0%8E · confidence: Medium (Wiktionary, Hokkien)