The war between Trisolaris and Earth has begun. Under interrogation, Ye Wenjie reveals the Trisolarans first attack-- to send, at great cost, two subatomic particles to earth. Meanwhile the human generals make a plan that must not fail.

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A chance encounter with a disenchanted environmentalist leads Ye Wenji to share the news of earth's impending invasion.

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As the Cultural Revolution draws to a close, Ye Wenjie revisits the actions taken by herself and others during the past two decades to determine if hope remains for humanity.

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Ye Wenjie receives a message from the stars and begins a series of actions that will change the course of humanity forever.

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A second meeting of Three Body players reveals a deep fission in the organization.

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Wang Miao attends a meet-up of Three Body players. In the game, the Trisolarans look back on past failures and seek a different solution.

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Wang Miao enters the second level of the Three Body game and finds the inhabitants attempting a project of enormous scale.

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Wang Miao receives an urgent summons to the police station where Shen Yufei's reclusive husband, Wie Chang, shares his story.

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Ye Wenjie concludes the story of her time at the Red Coast Base and Wang Miao progresses through the Three Body Problem game.

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Back in the time of the Cultural Revolution, Ye Wenjie learns more about the Red Coast Base's operations.

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