15 days. It is Tongling Health Commission released statistical information, Tongling, referred to as "Tong", alias Tongdu, the ancient name of Dingling, Yi'an, prefecture-level city under the jurisdiction of Anhui Province, is a city in the central area of the Yangtze River Delta, is located in East China, the south-central part of Anhui Province, the lower reaches of the Yangtze River, the north is connected to the Hefei, south of the Chizhou, the east is adjacent to the Wuhu, west of the Anqing.