Fu'an is 3 times larger than Saint Lucia.
Area: 616 km2 World Factbook
Population: 163,362 (July 2014) World Factbook
Saint Lucia is a sovereign island country in the eastern Caribbean Sea on the boundary with the Atlantic Ocean. Part of the Lesser Antilles, it is located north/northeast of the island of Saint Vincent, northwest of Barbados and south of Martinique. Wikipedia
Area: 1,821 km2 calculated
Fu'an is a county-level city of Ningde prefecture level city, in northeast Fujian province, PRC, some 150 kilometres away from the provincial capital Fuzhou. Wikipedia