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.
It is therefore inaccurate to assume China changed suddenly and all at once in the year 1644. In addition, China was divided for short periods of its history, with different regions being ruled by different groups. At times like these, there was not any single dynasty ruling a unified China. As a case in point, there is much dispute about times in and after the Western Zhou period. In the Chinese historiographical tradition, each new dynasty would write the history of the dynasty which preceded it. This cycle was disrupted, however, when the Xinhai Revolution overthrew the Qing dynasty in favor of a republic.