[1] His family shared a love of kunqu, an old form of Chinese opera, and Hsu played the bamboo flute.
Fellow students and friends, Stephan Kuttner and Hellmut Wilhelm, introduced Hsu to Barbara Schuchard, in Berlin.
He resigned this post in November 1945 in order to formally accuse Feng Yuxiang of his father's (Xu Shuzheng's) assassination, without appearance of political bias.
[1][6] During this time he published a biography of his father, The Life of General Hsu Shu-tseng (in Chinese, Commercial Press).
[1] In 1962, Hsu immigrated with his wife and two children to the U.S. to take a research faculty position at the University of Washington, joining his former colleague and friend, Hellmut Wilhelm, and his brother-in-law, Li Fang-kuei.
Although he published throughout his career, his German and Chinese works have not been translated into English, and he was not as well-recognized in the US as he was in China and Japan.