chúi-kheh水客

one who engages in parallel imports

one who engages in parallel imports; one who engages in parallel import of goods from Hong Kong or Macau to China, usually to or via Shenzhen; one who travels between Southeast Asia and China to deliver letters and money such as 僑批

especially

English Wiktionary, “水客” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E6%B0%B4%E5%AE%A2 · confidence: Medium (Wiktionary)