Mr. Wang completed his Chinese education in Peking, China in 1902. He was awarded a Government scholarship to study law in Japan in 1902-1907. He further studied law in Germany immediately afterwards and was graduated from Berlin University in 1912.
Yin-tai Wang was appointed in 1909 by the Viceroy of Cbihli to investigate and report on the Constitutional Government of the German Empire and the System of Local Self Government in that Country. Then he returned to China in 1913 and was appointed Counsellor to the Bureau of Legislation of the Cabinet Office in 1914-1920. He also served at different times on several Government commissions, such as the Commission for Diplomatic and Consular Service, the Civil Service Commission and the Law Drafting Commission. Upon the declaration of war against the Central Powers in 1917, he was appointed Judge of the High Prize Court and Legal Advisor to the Office for the Custody of Enemy Property.
Mr. Wang was a member of staff of the Special High Commissioner to Japan in 1917, legal Counsellor to the High Commissioner for Outer Mongolia and accompanied the Special Envoy to Urga, Mongolia in 1919, director of General Affairs Department of the High Commissioner for Outer Mongolia, and in charge of the same for a time in 1920, Counsellor to the Civil Service Bureau under the Cabinet in 1922.
Then he was re-appointed Counsellor in the Bureau of Legislation in 1922, Advisor to Marshal Chang Tso-lin and held various important posts in Manchuria in 1922-1925. Then he was appointed Vice-Minister of Foreign Affairs in 1926, and served concurrently as a delegate plenipotentiary to the Chinese Tariff Revision Conference, Chairman of the Commission for the Examination of Candidates for Diplomatic and Consular Appointments and Chairman of the Sino-Russian Conference Commission, Minister of Foreign Affairs in 1927, Minister of Justice in 1928.