Gout causes a painful, swollen joint that's so severe that the weight of bed sheets can cause distress. There may also be more than one joint affected with gout. With gout, uric acid -- a normal chemical in the body -- forms crystals that deposit in the joints, causing inflammation and pain.
China has been the source of many innovations, scientific discoveries and inventions. This includes the Four Great Inventions: papermaking, the compass, gunpowder, and printing (both woodblock and movable type). The list below contains these and other inventions in China attested by archaeology or history.
China.org.cn has selected the top 10 greatest inventions in ancient China to help you learn more about Chinese history and culture. The earliest alcohol makers in Chinese legend were Yi Di and Du Kang of the Xia Dynasty (about 2000 BCï¼1600 BC).