Wunsz King was born on April 27, 1892, in Pinghu, Chekiang. He joined the Ministry of Foreign Affairs (MOFA) in 1916, and was sent to study diplomacy at Columbia University. He also attended the 1919 Paris Peace Conference as assistant to Wellington Koo, and later resumed work at the MOFA. In 1933, he took part in the League of Nations Lytton Commission Report, and later served as Minister to the Netherlands until 1940, when Germany invaded the country. In 1941, he journeyed to London as Ambassador to the governments-in-exile of Belgium, Czechoslovakia, the Netherlands, Norway, and Poland, subsequently becoming Ambassador to Belgium after the Second World War. He represented China at preparatory conferences for various international organizations, and negotiated multilateral tariff adjustments in Geneva. In 1947, he also undertook a mission to Greece regarding aid by communist countries to rebels wanting to take over the country. He retired in 1952, and lived in the United States along with his two sons and daughter plus their children. He passed away on April 21, 1968.