Threads of Smoke, Salt, and Spinning Iron

September 22, 904 CE · China · A palace servant scrubs tiles near the eastern gate as soldiers pour past.

In China, Zhu Quanzhong is unfolding. The warlord Zhu Quanzhong kills Emperor Zhaozong, the penultimate emperor of the Tang dynasty, after seizing control of the imperial government.

I am mopping cool tiles near the eastern corridor of the palace at Daming when armed men hurry past, their boots thudding against marble. Drums quicken behind the heavy gates, and silk banners are torn down and trampled. Senior eunuchs flee with rolls of ledger under their arms, casting panicked looks over their shoulders. Outside, the smell of burning paper rises from the chancellery. The warlord Zhu Quanzhong's banners appear at the great gate, red as fresh lacquer. Spears thrust through the courtyard. A jade chime is knocked from its bronze hook and shatters. I crouch behind a bronze brazier as a soldier's horn sounds, low and final. The corridors flood with torches, and somewhere near the sleeping quarters a short, desperate cry is cut short. Smoke rolls over the rooftops.

September 22, 904 CE · China · A clerk at the Xuanwu war office writes while couriers stagger in with road dust.

In China, 宣武军节度使 is unfolding. 宣武軍節度使朱溫指使他人殺害唐朝第十九位皇帝唐昭宗，進而掌握實質權力。

I bend over a grain ledger at the Xuanwu war office in Bianzhou while a courier, his leggings caked with road dust, leans across the desk and mutters that the palace has been taken. Outside, the gates are being barred and studded with new studs. Sirens wail from the eastern watchtower, and a captain orders the barracks sealed. I seal the dispatch in wax stamped with our seal and another with black lacquer, and the runners take them north before the lacquer is dry. The emperor our fathers served lies dead in the palace, and the messengers are running. A bell rings twice in slow succession, the signal we have been told to expect. Outside the gate, a stream of palace refugees has begun to arrive on foot.

September 22, 1630 CE · China · A Beijing market merchant watches the bound prisoner dragged toward the execution ground.

In China, 後金 is unfolding. 在後金發動大規模奇襲後，明朝皇帝崇禎皇帝下令於北京以凌迟處死明清戰爭重要抗清將領袁崇煥。

I have come down to the market street outside the execution ground to watch the bound prisoner dragged past on a wooden frame. Word is that the Chongzhen emperor in Beijing has signed the warrant, ordering that the Ming general Yuan Chonghuan be put to death by the thousand-cut method under the open sky of the capital. The accused general lost border towns to the raiders of the Later Jin, and the court has blamed him. The executioner lays out his knives in a long row on a board, the longest no wider than a chopstick. He tests each edge against his thumb. Drums sound, then stop, and the crowd holds its breath. A child, lifted to his father's shoulders, looks away.

September 22, 1789 CE · Turkey · A Habsburg grenadier loads his musket at the edge of a clearing near Mărtinești.

In Turkey, Battle of Rymnik is unfolding. Battle of Rymnik: Alexander Suvorov's Russian and allied army defeats superior Ottoman Empire forces.

I kneel in the long grass at the left wing of the allied line, my ramrod stiff in my hands, while ahead of me Prince Josias of Coburg's Austrian columns spread out along a low ridge beside the Râmnicul Sărat River. Russian soldiers under Suvorov are already working through broken ground on our flank. The Ottoman line, much larger than ours, rolls forward with green and white banners. Smoke drifts across the river from our own first volley. Cannon on the ridge bark, then are swallowed in white cloud. A sergeant hands me an iron rammer, and I ram home the next round. The ground shakes. A cavalry horn answers from somewhere behind the Ottoman center, and the front ranks shift. Our left is almost surrounded, the colonel says, but no one breaks.

September 22, 1874 CE · China · A boatman ties his family sampan in Hong Kong harbor as the barometer sinks.

In China, 甲戌風災 is unfolding. 甲戌風災：台风横过珠江口，香港约有2,000人死亡，澳门约有5,000人死亡。

I lash the steering oar fast and shove the bow of our sampan under the stone steps of the wharf while the wind climbs the harbor walls. Beyond the Kowloon hills, black cloud drags its belly across the Pearl River mouth. Water sucks out of the wharf, lifting junk anchors into the air, then comes roaring back. A dozen ocean-going ships in Victoria Harbour begin to roll heavily, their chains snapping one after another. Cargo swings from their cranes and crashes onto the stone. Above us, the roof of a godown shivers, then peels away tile by tile into the harbor. Lanterns at the far end of Queen's Road gutter and die. I crouch under the gunwale, my daughters pressed flat between the thwarts. The wind has a voice now, and it speaks higher than my wife's.

September 22, 1891 CE · Finland · A Tampere mill worker watches the new penstock fill above the Tammerkoski rapids.

In Finland, hydropower plant is unfolding. The first hydropower plant of Finland is commissioned along the Tammerkoski rapids in Tampere, Pirkanmaa.

I stand on a fresh plank walkway above the Tammerkoski rapids and watch the penstock gates lift one by one. The engineer shouts in a voice that carries over the tumbling water. New iron turbines in the powerhouse beneath the falls begin to turn, slowly at first, their shafts whining under the load. The master switch is thrown. Lights along the wall of a cotton mill across the river blink on, fed for the first time from these rapids. Workers on the upper floor press their faces to the glass. The river keeps crashing over its black rocks, indifferent to the new machinery. Beyond the gates, the first frost is already whitening the high roofs of the city.