Because "Vietnam" is a homonym for "more difficult" in Chinese, old hands with Taiwanese firms there enjoy making use of the double entendre. When describing the charms and frustrations of doing business in that nation, they'll say: "The opportunities are limitless; the dangers everywhere; it's getting harder and harder in Vietnam."
「商機無限，危機處處，越來越『難』，」資深台商一語點破越南「既迷人又無奈」的投資現況。