In the 1920s when Wang Yun-wu was the editor in chief at The Commercial Press, one of the oldest book enterprises in China, he invented the Four Corner Method.

During his tenure, he edited the 4,000-volume collectanea Wanyou Wenku (萬有文庫), the Oriental Magazine (東方雜誌社), and co-curated the Oriental Library (東方圖書館), one of the largest private libraries in the country prior to its destruction by Japanese bombing in 1932.

On May 31, 1948, during the Chinese Civil War, he was appointed by Chiang Kai-shek to lead the Ministry of Finance.

In 1972 Wang Yun-wu presided over the opening of the Sun Yat-sen Memorial Hall in Taipei on behalf of the government.

On August 14, 1987, to commemorate his historical achievement his picture (as above) was placed on the NT$2 Stamp of which 4 million units were printed in Taiwan.