Afghanistan is 318 times larger than Yongcheng (China).
Area: 652,230 km2 World Factbook
Population: 31,822,848 (July 2014) World Factbook
Afghanistan, officially the Islamic Republic of Afghanistan, is a landlocked country located in Central Asia and South Asia. It has a population of around 31 million people making it the 42nd most populous country. Wikipedia
Area: 2,053 km2 calculated
Yongcheng is a county-level city in Shangqiu, Henan, in the People's Republic of China. It is the former site of Shiyuan, the capital of Han-era Liang. It includes the excavated mausoleum of the fabulously wealthy Liu Wu, prince of Liang, now a museum famed for its murals. Wikipedia