There is a saying that "I am among the enemy, and I am the enemy." Whether it's a battle or a business competition, victory or defeat often depends on how well we know the information of our opponents. "And to understand the other party's information, in addition to logical reasoning, is to put one's own people into the other party, and the higher the level of the person who penetrates the other party, the closer to his decision-making level and leadership core, the more valuable information can be grasped, so as to increase the chances of winning for oneself. Let's take a look at the strategies of the three social strata to penetrate the opponent's interior.

The upper echelons of society are indispensable.

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"Social Verticality" The strategy of the three social strata to penetrate into the opponent's interior. I am hitting it in my hand, please wait a moment,

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