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.
Besides, China was rich in ceramics and silk textiles which were great inventions that exerted a great impact worldwide. China also kept the world's most detailed and earliest astronomical records. The first people to take note of such astronomical phenomena as comets, sunspots and new stars were all Chinese.