To emphasize the paramount importance of espionage and subversion in warfare, suggesting that subtle tactics can be more decisive and valuable than direct military engagement, even if they appear less costly.
在激烈的市场竞争中，有时候“千金用兵，百金求间”的策略，即通过精准的市场调研和客户关系维护，比盲目投入广告更为有效。
In fierce market competition, sometimes the strategy of "spending a thousand gold on deploying an army, but a hundred gold on seeking discord," meaning precise market research and maintaining customer relationships, proves more effective than blindly investing in advertisements.
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