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This first turns up in Book 3. Come back when you get there.

tech

strong-interaction materials

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First appears in Book 3: Death's End, chapter 34 (Post-Deterrence Era, Day 60 A Lost World)

Appearances

B1

B2

B3

What you know

Book 3: Death's End

Ch 34SIM is the only material able to defend against droplets; only small lab quantities existed, and large-scale production would have needed about ten more years.

An unofficial, spoiler-aware fan guide to Remembrance of Earth's Past by Cixin Liu. Nothing past your reading progress is shown. Book details and covers from Open Library.

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