The black silhouette ahead was their destination: a Western church abandoned to war.
Under cover of night they slipped into the ruined building without a whisper. The stone walls shut out the knife-cold wind — and, for now, the hunters behind them.
As soon as they settled, Su Wan linked her portable terminal to Xuanwu and rescanned the cipher pages she had traced from Sato’s notebook.
"Any progress?" Lin Xiao asked.
She nodded, eyes bright with shock. "The base logic is a ghost of German WWII cryptography — Enigma. Rotors, reflector, daily key... almost one-to-one. But on top of it someone nested features of modern hash algorithms. One-way encryption, avalanche effect, fixed-length output. That is impossible for 1945. The notebook was injected from a much later future."
Silence fell in the church, colder than facing a thousand rifles.
Near midnight, the air in front of Lin Xiao wavered like heat-shimmer. A figure in modern gear flickered into being — Zhao Zhiguo — half-transparent, sound chopped.
"...souvenir card... a decoy... someone altered the Zeroing Protocol... core target... stop Yamamoto... detonation..." Static surged; the image broke apart.
Xuanwu beeped on Lin Xiao’s wrist. Log string: "Abnormal geomagnetic spike recorded: 7.34 microtesla." Not a hallucination then, but a weak cross-time resonance. A key to the enemy’s future-side nodes, maybe.
He woke Su Wan and relayed everything. She drew out a yellowing copy file: a 1937 archive from Beiping* — the southward evacuation of the Forbidden City. On a hand-drawn map, a few ink dots on the margins sat too neatly to be accidents.
She keyed those coordinates into Xuanwu, then called up the stubborn hash fragment from Sato’s notes.
"Match." The dots lined up with the hash output. The cipher was not a sentence at all — it was a coordinate lock hiding inside an old map. Feed it the right vector and the hash collapsed to waypoints.
Old Ma slipped in from the perimeter. "Our boys found an 'Imperial Army Special Survey Team' moving into an abandoned arsenal at Qingyuan Town*. Leading them is a Colonel named Yamamoto Ryuya. The place is tight as an iron barrel. Canvas-covered trucks keep hauling in metal crates. The sentries’ challenge-words mix Japanese with something like English."
Su Wan searched the name. Records showed Yamamoto Ryuya — confirmed KIA in Burma, 1944. "This Yamamoto is fake," she said. "Either a future operative in disguise, or the controller running this show."
Qingyuan Town* was the enemy’s nest.
Lin Xiao’s briefing was swift and clean. "Time is short. Two prongs. Chen Tie, infiltrate the arsenal. At any cost, find what is inside those crates — get physical evidence. Su Wan and I take Xuanwu to the outer ring. Before they finish deployment, we hunt down the fake Yamamoto and execute a precision decapitation."
Before leaving, Lin Xiao slid a worn metal photo frame of fallen brothers into a hidden slot inside Xuanwu. "This time, no one dies for nothing," he said under his breath.