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Squatting-tiger Trebuchet
''Hu dun pao'' (虎蹲砲) is the name of two different missile weapons in Chinese history. In the Song dynasty (960–1279), it was a trebuchet and its name is translated into English as Crouching Tiger Trebuchet; in the Ming dynasty (1368–1644), the name was given to a type of bombard and it is known in English as Crouching Tiger Cannon. Trebuchet According to the Song dynasty military compendium ''Wujing Zongyao'' (published 1044), the ''hu dun pao'' is depicted as a traction trebuchet with a triangular frame. It is operated by a dedicated corps of 70 haulers, who took turns pulling the ropes attached to the trebutchet arm to send the projectile, a stone or bomb, into flight. It has a range of . The '' Annales ianuenses'', the official history of Genoa, carries drawings of ''trabuchium'', a counterweighted trebuchet with triangular supporting trusses, that Sinologist Joseph Needham considers to be derived from or related to the Chinese "Crouching Tiger Trebuchet". Similar tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huolongjing
The ''Huolongjing'' (; Wade-Giles: ''Huo Lung Ching''; rendered in English as ''Fire Drake Manual'' or ''Fire Dragon Manual''), also known as ''Huoqitu'' (“Firearm Illustrations”), is a Chinese military treatise compiled and edited by Jiao Yu and Liu Bowen of the early Ming dynasty (1368–1683) during the 14th-century. The ''Huolongjing'' is primarily based on the text known as ''Huolong Shenqi Tufa'' (''Illustrations of Divine Fire Dragon Engines''), which no longer exists. History The ''Huolongjings intended function was to serve as a guide to "fire weapons" involving gunpowder during the 1280s to 1350s. The ''Huolongjing'' provides information on various gunpowder compositions and weapons. Some formulas mentioned are given names such as "divine gunpowder", "poison gunpowder", and "blinding and burning gunpowder". The weapons described include bombs, fire arrows, rockets, land mines, naval mines, fire lances, hand cannons, and cannons mounted on wheeled carriages. Alth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fujian
Fujian (; alternately romanized as Fukien or Hokkien) is a province on the southeastern coast of China. Fujian is bordered by Zhejiang to the north, Jiangxi to the west, Guangdong to the south, and the Taiwan Strait to the east. Its capital is Fuzhou, while its largest city by population is Quanzhou, both located near the coast of the Taiwan Strait in the east of the province. While its population is predominantly of Chinese ethnicity, it is one of the most culturally and linguistically diverse provinces in China. The dialects of the language group Min Chinese were most commonly spoken within the province, including the Fuzhou dialect of northeastern Fujian and various Hokkien dialects of southeastern Fujian. Hakka Chinese is also spoken, by the Hakka people in Fujian. Min dialects, Hakka and Mandarin Chinese are mutually unintelligible. Due to emigration, a sizable amount of the ethnic Chinese populations of Taiwan, Singapore, Malaysia, Indonesia, and the Philippines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siege Of Pyongyang (1593)
The siege of Pyongyang was a military conflict fought between the allied Ming-Joseon army and the Japanese First Division under Konishi Yukinaga. The battle ended in victory for the allies but a successful retreat from Pyeongyang by the remaining Japanese in the night of 8 February 1593. Background A minor Ming force of 5,000 under Wu Weizhong arrived at the Yalu River on 5 January. The Ming army of 35,000 under Li Rusong arrived at the Yalu River on 26 January. They were then joined by the advance force and a bodyguard unit sent to protect Seonjo of Joseon, raising their strength to 43,000, another 10,000 Koreans at Sunan under Yi Il, and finally 4,200 monks under Hyujeong. Li Rusong sent ahead the envoy Shen Weijing to negotiate with Konishi Yukinaga, however this act was insincere. He had no intention of negotiating with the Japanese. Konishi sent 20 men to greet the Ming envoys, but most of them did not return. It's not certain what happened to them. One version of even ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imjin War
The Imjin River ( in South Korea) or Rimjin River ( in North Korea) is the 7th largest river in Korea. It flows from north to south, crossing the Demilitarized Zone and joining the Han River downstream of Seoul, near the Yellow Sea. The river is not the namesake of the Imjin War (Japanese invasions in the late 16th century). History Imjin River was the site of two major battles: the Battle of Imjin River during the Imjin war in 1592, and the Battle of the Imjin River that took place during the Korean War. Joint Use Zone On November 4, 2018, a 20-member team consisting of 10 people from North Korea and 10 people from South Korea began a joint inter-Korean survey intended to lead to the development a Joint Utilization Zone along Imjin River's estuary.Archived aGhostarchiveand thWayback Machine The Zone would allow civilians to access the estuary for tourism, ecological protection and the collection of construction aggregate under the protection of militaries from both sides of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Qi Jiguang
Qi Jiguang (, November 12, 1528 – January 17, 1588), courtesy name Yuanjing, art names Nantang and Mengzhu, posthumous name Wuyi, was a Chinese military general and writer of the Ming dynasty. He is best known for leading the defense on the coastal regions against ''wokou'' pirate activities in the 16th century, as well as for the reinforcement of the Great Wall of China. Qi is also known for writing the military manuals ''Jixiao Xinshu'' and Lianbing Shiji or ''Record of Military Training'' (), which he based on his experience as a martial educator and defensive planner in the Ming military forces. He is regarded as a hero in Chinese culture. Biography Early life Qi Jiguang was born in the town of Luqiao in Shandong province to a family with a long military tradition. His forefather served as a military leader under the Hongwu Emperor and died in battle. When Zhu Yuanzhang became the founding emperor of the Ming dynasty, he bestowed upon the Qi family the hereditary po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quenching
In materials science, quenching is the rapid cooling of a workpiece in water, oil, polymer, air, or other fluids to obtain certain material properties. A type of heat treating, quenching prevents undesired low-temperature processes, such as phase transformations, from occurring. It does this by reducing the window of time during which these undesired reactions are both thermodynamically favorable, and kinetically accessible; for instance, quenching can reduce the crystal grain size of both metallic and plastic materials, increasing their hardness. In metallurgy, quenching is most commonly used to harden steel by inducing a martensite transformation, where the steel must be rapidly cooled through its eutectoid point, the temperature at which austenite becomes unstable. In steel alloyed with metals such as nickel and manganese, the eutectoid temperature becomes much lower, but the kinetic barriers to phase transformation remain the same. This allows quenching to start at a lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
