If, for example, Taiwan were to declare independence, China would likely intervene with armed force, regardless of the perceived economic or military costs. But it would be unlikely to win such a war, and prudent policy on both sides can make such a war unlikely.
举例而言，万一台湾要宣布独立，中国有可能将会不顾经济或军事代价进行武装干涉。但是要赢得这场战争却不太可能，并且双方谨慎的政策也在尽量避免这场战争。