The connection between dreams and codes

The connection between dreams and codes is a recurring tension in Rong Jinzhen’s work and inner life: both seem to conceal meanings beneath confusing surfaces, but the novel never makes them equivalent methods of knowledge. Dreams offer Jinzhen an intimate, unruly world in which he hopes to approach an enemy’s alien intelligence; codes, by contrast, yield to evidence, patience, and the discovery of a weakness. The resemblance draws him toward BLACK, while the difference helps explain the cost of that pursuit.

Dreams as interpretation

At Unit 701, Jinzhen’s interest in dreams becomes a social activity before it becomes a deliberate strategy. People seek him out to explain the tangled thoughts that have appeared to them overnight. He is not presented as a trained dream interpreter, and his success is not grounded in expertise: he finds it hard to refuse people face to face, so he takes their disordered accounts and arranges them into something that seems to make sense. His willingness to do so turns dream interpretation into another demand on a man already expected to work on ciphers.

The practice also brings him into conflict with political authority. At a Thursday afternoon meeting for Unit 701 staff, where policy, newspaper readings, or open discussion might be on the agenda, colleagues draw him aside to interpret dreams. A deputy division chief sees him doing this and condemns it as feudal superstition, requiring a written self-criticism. Colleagues advise Jinzhen to offer a perfunctory response and be done with the matter. Instead, his one-line submission links dreams directly to cryptography, asserting that the secrets of the world are hidden in dreams, including ciphers. That formulation does not satisfy the official: its refusal to treat dream interpretation as harmless or separate from his work sounds, to the deputy chief, like defiance. The episode makes the connection more than a private metaphor; it exposes how Jinzhen’s way of finding meaning can collide with institutional rules about what may be discussed.

A dream as a possible route to BLACK

The idea takes on a more urgent form when Jinzhen tries to understand BLACK. He suspects that its creator possesses an intelligence fundamentally unlike human intelligence. Because Jinzhen is human, he reasons that waking thought may not be enough to bring him close to this imagined mind; dreaming could provide a different approach. The attempt begins as a source of morale, a possible way out of an impasse. He starts instructing himself to dream every night, turning sleep into a responsibility tied to the work.

That deliberate pressure has a damaging consequence. Dreams arrive in a thick, disordered stream, with no coherent thought to guide them, and disrupt his ordinary sleep. To recover some normality, Jinzhen changes his evenings: he reads novels to ease the strain of the day and walks to tire himself before bed. Both help. He describes reading and walking as his two sleeping pills, a practical counterweight to his effort to make sleep produce answers. The contrast is crucial: what began as a hoped-for instrument of discovery threatens to become another source of exhaustion, and ordinary habits prove more useful for rest than forced dreaming.

Two worlds and two ways of seeking meaning

Jinzhen’s dream life is not merely a set of clues he can consult at will. The narrative describes his existence as divided between a real world and a dream world: reality’s contents enter his dreams, but the dream world also contains things that need not exist in waking life. Its logic is more absurd and less coherent than reality’s. That asymmetry explains both the appeal and the danger of using dreams to approach a cipher. The dream world can make unfamiliar possibilities available to imagination, but it does not thereby certify them as facts.

Cryptanalysis is also described through images of concealment and access, yet its procedure depends on material evidence. The conventional method begins with information gathered by intelligence agents, then develops and tests hypotheses. It resembles making keys for a multitude of doors; the amount of available material and the cryptographer’s sensitivity to the cipher affect the search. Though laborious, this method is presented as safe, effective, and especially appropriate for high-level codes. A cipher may look like a seamless net, but its use can produce slips—small errors that give a codebreaker an opening. Dreams and codes thus share an image of hidden interiors, while differing in how their meanings can be established: a dream may multiply interpretations, whereas a cipher must eventually be tested against what its use reveals.

From imagined access to the zero key

The contrast becomes stark in the account of BLACK. The earlier success against PURPLE had made the opposing side more cautious, while Jinzhen had found no errors in BLACK. The expected openings did not appear. Against that absence of evidence, his dream-based effort carries enormous psychological weight: he is trying to approach an intelligence he imagines as alien even as the cipher gives him no ordinary mistake to exploit.

The eventual revelation is startlingly plain. BLACK’s key is zero; the account first locates the key in a leather attaché case and then names the number. The apparent lock had been a façade, and opening it required no elaborate key-making search. This resolution does not establish dreams as a supernatural or dependable codebreaking technique. Instead, it throws their relation into sharper relief: Jinzhen’s dream world had seemed a route toward a hidden, monstrous intelligence, while BLACK’s decisive secret was an unexpected simplicity. Dreams give the search its imaginative force and expose Jinzhen’s vulnerability; the cipher’s solution belongs to a concrete discovery, not to a dream’s authority.