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Liu Xin (scholar)
Liu Xin (; c. 50 BCE – 23 CE), courtesy name Zijun (), was a Chinese astronomer, mathematician, historian, librarian and politician during the Western Han Dynasty (206 BCE – 9 CE) and Xin Dynasty (9 – 23 CE). He later changed his name to Liu Xiu () due to the naming taboo of Emperor Ai of Han. He was the son of Confucian scholar Liu Xiang (77 – 6 BCE) and an associate of other prominent thinkers such as the philosopher Huan Tan (c. 43 BCE – 28 CE). Liu founded the Old Text school of Confucianism. Early life Liu Xin was the son of Confucian scholar Liu Xiang (77 – 6 BCE). Liu was a distant relative of Liu Bang, the founder of the Han dynasty, and was thus a member of the ruling dynastic clan (the Liu family). Liu Xin's paternal grandfather ranked as a marquess. Librarian As a curator of the imperial library he was the first to establish a library classification system and the first book notation system. At this time the library catalog was writte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Courtesy Name
A courtesy name (), also known as a style name, is a name bestowed upon one at adulthood in addition to one's given name. This practice is a tradition in the East Asian cultural sphere, including China, Japan, Korea, and Vietnam.Ulrich TheobaldNames of Persons and Titles of Rulers/ref> A courtesy name is not to be confused with an art name, another frequently mentioned term for an alternative name in East Asia, which is closer to the concept of a pen name or a pseudonym. Usage A courtesy name is a name traditionally given to Chinese men at the age of 20 ''sui'', marking their coming of age. It was sometimes given to women, usually upon marriage. The practice is no longer common in modern Chinese society. According to the '' Book of Rites'', after a man reached adulthood, it was disrespectful for others of the same generation to address him by his given name. Thus, the given name was reserved for oneself and one's elders, whereas the courtesy name would be used by adults ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wang Mang
Wang Mang () (c. 45 – 6 October 23 CE), courtesy name Jujun (), was the founder and the only emperor of the short-lived Chinese Xin dynasty. He was originally an official and consort kin of the Han dynasty and later seized the throne in 9 CE. The Han dynasty was restored after his overthrow, and his rule marked the separation between the Western Han dynasty (before Xin) and Eastern Han dynasty (after Xin). Traditional Chinese historiography viewed Wang as a tyrant and usurper, while more recently, some historians have portrayed him as a visionary and selfless social reformer. During his reign, he abolished slavery and initiated a land redistribution program. Though a learned Confucian scholar who sought to implement the harmonious society he saw in the classics, his efforts ended in chaos. Wang Mang's late reign saw large-scale peasant rebellions, most notably the revolt of the Red Eyebrows. In October 23 CE, the capital Chang'an was attacked and the imperial pala ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Year Of Birth Uncertain
A year or annus is the orbital period of a planetary body, for example, the Earth, moving in its orbit around the Sun. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by change in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar regions around the planet, four seasons are generally recognized: spring, summer, autumn and winter. In tropical and subtropical regions, several geographical sectors do not present defined seasons; but in the seasonal tropics, the annual wet and dry seasons are recognized and tracked. A calendar year is an approximation of the number of days of the Earth's orbital period, as counted in a given calendar. The Gregorian calendar, or modern calendar, presents its calendar year to be either a common year of 365 days or a leap year of 366 days, as do the Julian calendars. For the Gregorian calendar, the average length of the calendar y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
23 Deaths
3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious or cultural significance in many societies. Evolution of the Arabic digit The use of three lines to denote the number 3 occurred in many writing systems, including some (like Roman and Chinese numerals) that are still in use. That was also the original representation of 3 in the Brahmic (Indian) numerical notation, its earliest forms aligned vertically. However, during the Gupta Empire the sign was modified by the addition of a curve on each line. The Nāgarī script rotated the lines clockwise, so they appeared horizontally, and ended each line with a short downward stroke on the right. In cursive script, the three strokes were eventually connected to form a glyph resembling a with an additional stroke at the bottom: ३. The Indian digits spread to the Caliphate in the 9th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
50 BC Births
5 (five) is a number, numeral and digit. It is the natural number, and cardinal number, following 4 and preceding 6, and is a prime number. It has attained significance throughout history in part because typical humans have five digits on each hand. In mathematics 5 is the third smallest prime number, and the second super-prime. It is the first safe prime, the first good prime, the first balanced prime, and the first of three known Wilson primes. Five is the second Fermat prime and the third Mersenne prime exponent, as well as the third Catalan number, and the third Sophie Germain prime. Notably, 5 is equal to the sum of the ''only'' consecutive primes, 2 + 3, and is the only number that is part of more than one pair of twin primes, ( 3, 5) and (5, 7). It is also a sexy prime with the fifth prime number and first prime repunit, 11. Five is the third factorial prime, an alternating factorial, and an Eisenstein prime with no imaginary part and real part of the fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encyclopedia Of China
The ''Encyclopedia of China'' () is the first large-entry modern encyclopedia in the Chinese language. The compilation began in 1978. Published by the Encyclopedia of China Publishing House, the encyclopedia was issued one volume at a time, beginning in 1980 with a volume on astronomy; the final volume was completed in 1993. It comprised 74 volumes, with more than 80,000 entries. Arranged by subject, which numbered 66 (some subjects occupy more than one volume), within each subject, entries were arranged by pinyin as many modern Chinese dictionaries have been. A Uyghur language edition was also published in 2015. A CD-ROM version and a subscription-based online version are also available. A second and more concise edition of the work was published in 2009. The third online edition was released and published in the end of 2018, which is free to use. More than 20,000 scholars participated in this online encyclopaedia program which started in 2011, including some experts from Chines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science And Technology Of The Han Dynasty
The Han dynasty (206 BCE – 220 CE) of early imperial China, divided between the eras of Western Han (206 BCE – 9 CE, when the capital was at Chang'an), the Xin dynasty of Wang Mang (r. 9–23 CE), and Eastern Han (25–220 CE, when the capital was at Luoyang, and after 196 CE at Xuchang), witnessed some of the most significant advancements in premodern Chinese science and technology. There were great innovations in metallurgy. In addition to Zhou-era China's (c. 1046 – 256 BCE) previous inventions of the blast furnace and cupola furnace to make pig iron and cast iron, respectively, the Han period saw the development of steel and wrought iron by use of the finery forge and puddling process. With the drilling of deep boreholes into the earth, the Chinese used not only derricks to lift brine up to the surface to be boiled into salt, but also set up bamboo-crafted pipeline transport systems which brought natural gas as fuel to the furnaces. Smelting techn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mars
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury. In the English language, Mars is named for the Roman god of war. Mars is a terrestrial planet with a thin atmosphere (less than 1% that of Earth's), and has a crust primarily composed of elements similar to Earth's crust, as well as a core made of iron and nickel. Mars has surface features such as impact craters, valleys, dunes and polar ice caps. It has two small and irregularly shaped moons, Phobos and Deimos. Some of the most notable surface features on Mars include Olympus Mons, the largest volcano and highest known mountain in the Solar System and Valles Marineris, one of the largest canyons in the Solar System. The Borealis basin in the Northern Hemisphere covers approximately 40% of the planet and may be a large impact feature. Days and seasons on Mars are comparable to those of Earth, as the planets have a similar rotation period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impact Crater
An impact crater is a circular depression in the surface of a solid astronomical object formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. Lunar impact craters range from microscopic craters on lunar rocks returned by the Apollo Program and small, simple, bowl-shaped depressions in the lunar regolith to large, complex, multi-ringed impact basins. Meteor Crater is a well-known example of a small impact crater on Earth. Impact craters are the dominant geographic features on many solid Solar System objects including the Moon, Mercury, Callisto, Ganymede and most small moons and asteroids. On other planets and moons that experience more active surface geological processes, such as Earth, Venus, Europa, Io and Titan, visible impact craters are less common because they become ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Kunyang
The Battle of Kunyang () was fought during June and July in 23 AD, between the Lulin and Xin forces. The Lulin forces were led by Liu Xiu, who later became Emperor Guangwu of Han, while the far more numerous Xin were led by Wang Yi and Wang Xun (). Wang Xun was killed during a foolhardy attack on Liu's force with a small contingent of his force, and the Lulin forces disrupted the remainder of the Xin army, forcing Wang Yi to retreat. This was the decisive battle that led to the fall of the Xin Dynasty. Background By the end of the Xin Dynasty, peasants all over the country rebelled against Xin Emperor Wang Mang in response to what they saw as years of incompetent rule. Calls for the re-establishment of the Han Dynasty, which Wang Mang overthrew, were on the rise. Heeding these voices, the leaders of the Lulin rebellions supported Liu Xuan to be the emperor of the new Han Dynasty. Wang Mang decided that he had to crush the newly constituted Han regime before it gained momentum, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liu Hui
Liu Hui () was a Chinese mathematician who published a commentary in 263 CE on ''Jiu Zhang Suan Shu (The Nine Chapters on the Mathematical Art).'' He was a descendant of the Marquis of Zixiang of the Eastern Han dynasty and lived in the state of Cao Wei during the Three Kingdoms period (220-280 CE) of China. His major contributions as recorded in his commentary on ''The Nine Chapters on the Mathematical Art'' include a proof of the Pythagorean theorem, theorems in solid geometry, an improvement on Archimedes's approximation of , and a systematic method of solving linear equations in several unknowns. In his other work, '' Haidao Suanjing (The Sea Island Mathematical Manual)'', he wrote about geometrical problems and their application to surveying. He probably visited Luoyang, where he measured the sun's shadow. Mathematical work Liu Hui expressed mathematical results in the form of decimal fractions that utilized metrological units (i.e., related units of length with base ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zhang Heng
Zhang Heng (; AD 78–139), formerly romanized as Chang Heng, was a Chinese polymathic scientist and statesman who lived during the Han dynasty. Educated in the capital cities of Luoyang and Chang'an, he achieved success as an astronomer, mathematician, seismologist, hydraulic engineer, inventor, geographer, cartographer, ethnographer, artist, poet, philosopher, politician, and literary scholar. Zhang Heng began his career as a minor civil servant in Nanyang. Eventually, he became Chief Astronomer, Prefect of the Majors for Official Carriages, and then Palace Attendant at the imperial court. His uncompromising stance on historical and calendrical issues led to his becoming a controversial figure, preventing him from rising to the status of Grand Historian. His political rivalry with the palace eunuchs during the reign of Emperor Shun (r. 125–144) led to his decision to retire from the central court to serve as an administrator of Hejian Kingdom in present-day Hebei. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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