From June 1940 until February 1943, the concession of Guangzhouwan (Kouang-Tchéou-Wan or Fort-Boyard), in South China, remained under the administration of Free France. The Republic of China, after the fall of Paris in 1940, recognised the London-exiled Free French government as Guangzhouwan's legitimate authority and established diplomatic relations with them, something facilitated by the fact that the colony was surrounded by the Republic of China's territory and was not in physical contact with French Indochina. In February 1943 the Imperial Japanese Army invaded and occupied the leased territory.