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Lady Dou Wan was the wife of Liu Sheng, Prince of Zhongshan, of the Western Han Dynasty. Her tomb was discovered in 1968 in Mancheng County, Hebei. Her body was encased in a jade burial suit.<br/><br/> Among the artefacts found in the tomb was a gilt bronze figure of a maidservant holding an oil-lamp, the 'Changxin Palace Lamp'. Not only was the palace maid beautifully sculptured, the lamp and its cover were cleverly designed so that both the lamp's illuminating power and the direction of its rays were (and still are) adjustable.
Mancheng County (Mànchéng Xiàn) is a county of west-central Hebei province, China, in the eastern foothills of the Taihang Mountains. It is administratively part of Baoding prefecture-level city, of which the Mancheng is a northwestern suburb.<br/><br/> Mancheng is the site of the Han dynasty tombs of king/prince Liu Sheng and his wife Dou Wan.
A water clock or clepsydra (Greek) is any timepiece in which time is measured by the regulated flow of liquid into (inflow type) or out from (outflow type) a vessel where the amount is then measured.<br/><br/> Water clocks, along with sundials, are likely to be the oldest time-measuring instruments, with the only exceptions being the vertical gnomon and the day-counting tally stick. Where and when they were first invented is not known, and given their great antiquity it may never be. The bowl-shaped outflow is the simplest form of a water clock and is known to have existed in Babylon and in Egypt around the 16th century BCE.<br/><br/> Other regions of the world, including India and China, also have early evidence of water clocks, but the earliest dates are less certain. Some authors, however, claim that water clocks appeared in China as early as 4000 BCE.
Acupuncture (from Latin, 'acus' (needle) + 'punctura' (to puncture) is the stimulation of specific acupuncture points along the skin of the body involving various methods such as penetration by thin needles or the application of heat, pressure, or laser light.<br/><br/> Clinical practice varies depending on the country. Traditional acupuncture involves needle insertion, moxibustion, and cupping therapy. It is a form of alternative medicine and a key component of traditional Chinese medicine (TCM).<br/><br/> According to TCM, stimulating specific acupuncture points corrects imbalances in the flow of 'qi' through channels known as meridians. Acupuncture aims to treat a range of conditions, though is most commonly used for pain relief. It is rarely used alone but rather as an adjunct to other treatment modalities.