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Zhang Heng completes his star catalogue, documenting 2,500 stars in over 100 constellations, writes a new formula for pi, corrected mistakes in the Chinese calendar, gave reasoning for a spherical moon that reflects light, and noted that lunar eclipse occurred when the earth obstructed the sunlight reaching the moon, while a solar eclipse was the moon's obstruction of sunlight reaching earth.
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Zhang Heng invents the first hydraulic-powered armillary sphere, given motive power by a waterwheel and incorporating an inflow water clock, the latter of which he improved by adding a compensating tank between the reservoir and the inflow vessel.
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Zhang Heng invents a seismometer device that, with a pendulum and complex set of gears and cranks, is able to discern the cardinal direction of earthquakes by the dropping of bronze balls into wrought toad's mouths indicating the direction.
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The Battle of Xingshi was a failed invasion on the state of Shu Han by its rival Cao Wei in 244 during the Three Kingdoms period of Chinese history. The battle took place at Mount Xingshi, which is situated north of present-day Yang County, Shaanxi, and is now part of the Changqing National Nature Reserve.
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Ma Jun invents the south-pointing chariot, a mechanical directional pathfinder that acts like a compass in that it always points south
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Songyue Pagoda is built, the earliest known fully brick pagoda in China, in departure from the fully timber tradition. It still stands at a height of 131ft
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Emperor Gaozong commissions the compilation of a large materia medica documenting the use of 833 medicinal drugs.
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Yi Xing invents a water-powered celestial globe featuring an escapement mechanism and striking clock.
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This battle marks the beginning of the westward transmission of the ancient Chinese papermaking process
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Sometime between this year and the end of the century, the Chinese discovered how to use bituminous coke instead of charcoal for blast furnaces in casting iron, sparing thousands of acres of prime timberland from deforestation.
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After 39 years in the making, the enormous atlas of China commissioned by the emperor and drawn by a team of scholars under Lu Duosun and Song Zhun is completed in 1556 chapters
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Drydock: A large dock in the form of a basin from which the water can be emptied, used for building or repairing a ship below its water line.
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According to research, China was producing on annual average 125,000 tons of cast iron by this year
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First known description of the mechanical belt drive. A belt is a loop of flexible material used to link two or more rotating shafts mechanically
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The northern third of China is conquered by the Jurchens
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The Mongols, under Kublai Khan's leadership, invade Sichuan and capture 146 Song naval ships
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The overseas voyages of admiral Zheng He begin, sailing around Southeast Asia, throughout the Indian Ocean, and as far as East Africa to reestablish tributary relations of foreign countries with China
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After 13 years of a massive construction project for a new capital and Forbidden City, the Yongle Emperor declares Beijing the new capital
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Portuguese ships make continuous annual trade stops to Shangchuan Island from now on.
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Altan Khan breaches the Great Wall, besieges Beijing, and burns down its suburbs after looting it
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From this year until 1682, the Dutch East India Company ships some six million Chinese porcelain items to Europe
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British East India Company establishes a trading post in Guangzhou
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on July 4th, 1776, America declared its independence from Britain
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The start of a civil war over in america, dividing the nation into north and south
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In 1865, the war in america ends
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The revolution ended with the abdication of the "Last Emperor" Puyi on February 12, 1912, that marked the end of over 2,000 years of imperial rule and the beginning of China's republican era
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The Central China floods of 1931 were a series of floods that occurred in the Republic of China. The floods are generally considered among the deadliest natural disasters ever recorded with death tolls from 145,000 to 4,000,000
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Japan attacks Pearl Harbor, Hawaii and America is forced to enter WW2
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The Great Leap Forward of the People's Republic of China was an economic and social campaign of the Communist Party of China, reflected in planning decisions from 1958 to 1961, which aimed to use China's vast population to rapidly transform the country from an agrarian economy into a modern communist society through the process of rapid industrialization and collectivization.
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The Tiananmen incident was in Beijing, China, where thousand of protestors were shot to death on the street by the military.
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Five US JDAM guided bombs hit the Republic of China embassy in the Belgrade district of New Belgrade, killing three Chinese reporters and outraging the Chinese public. The president claimed it was an "accident".
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A Tibetan monk receives a suspended death sentence and his nephew 10 years in jail for inciting eight people to burn themselves to death
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Battle of Red Cliffs - - Cao Cao loses war with 840,000 troops against Liu Bei and Sun Quan's 50,000.
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After the well-field system had fallen out of use, Emperor Xiaowen of Northern Wei introduces the equal-field system.
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The Army of Divine Strategy reaches 240,000 troops, thanks to the revenues of the salt commission
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