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Zu Ti’s Northern Expedition
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Zu Ti’s Northern Expedition (313–321 CE) refers to the military campaign led by the Eastern Jin general Zu Ti across the Yangtze River to recover the Central Plains from non-Han regimes following the collapse of the Western Jin.
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Zu Chongzhi
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Zu Chongzhi (429–500 CE) was a preeminent scientist of the Southern Dynasties during the Northern and Southern Dynasties period. His courtesy name was Wenyuan, and his ancestral home was Qiu County, Fanyang Commandery (in present-day Laishui, Hebei).
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Zhinü
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Zhinü (“Weaver Girl”) is an ancient Chinese star name, also known as Tiansun (“Granddaughter of Heaven”). It refers to an asterism of three stars arranged in a triangular formation, located on the western side of the Milky Way, directly opposite the Niulang (Cowherd) stars on the eastern bank.
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Niulang
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Niulang (“Cowherd”) is an ancient Chinese star name, also known as Qian Niu (“Heavenly Cowherd”). It refers to an asterism composed of three stars located on the eastern side of the Milky Way, directly opposite the star Zhinü (“Weaver Girl”) – identified with Vega in Western astronomy – on the western bank.
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The Siege of Xuyi and the Fall of a Tyrant
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A Fractured South and a Reckless North After the Northern Wei unified northern China in 439 CE, it stood face-to-face with the Liu Song dynasty in the south – a rivalry destined for war.