Nail fungus can cause the nail to become thick or ragged and appear yellow, green, brown or black. An infected nail may separate from the nail bed. Nail fungus is a common condition that begins as a white or yellow spot under the tip of your fingernail or toenail. As the fungal infection goes deeper, nail fungus may cause your nail to discolor, thicken and crumble at the edge. It can affect several nails. If your condition is mild and not bothering you, you may not need treatment.
He established the first centralized, unified, multi-ethnic state in Chinese history, under the Qin Dynasty (221-207 B.C.). He called himself Shi Huang Di (the First Emperor), also known as Qin Shi Huang, or First Emperor of the Qin Dynasty.
In 589, the Sui dynasty united China once again, ending a prolonged period of division in Chinese history. In the nearly four centuries between the Han and Sui dynasties, the country was united for only 24 years during the Western Jin.