馮國璋
In 1884 Yin Chang returned to China and was appointed to the Tientsin Naval Academy; that December he was assigned to serve as translator for the German military envoy to the Emperor. By June 1885 Yin Chang was appointed an instructor in military science at the Tientsin Military Academy (天津武備學堂), introducing German officers to teach the study and practice of German military techniques. The following year he was promoted to superintendent of the Academy. The future President of the Republic of China, Feng Guozhang, was a student under his direction.