A military strategy involving strengthening defenses and removing all resources from the surrounding area, to deny them to an invading enemy and force their retreat or surrender due to lack of supplies.
为了应对来势汹汹的竞争对手，这家公司决定采取闭壁清野的策略，集中力量巩固核心业务，并切断对手获取关键资源的渠道。
To cope with fierce competitors, the company decided to adopt a strategy of strengthening its core business and cutting off rivals' access to key resources, much like clearing the fields.
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