This article demonstrates that in the 1920s, there was a major transition in views of historical evidence. Scholars trained in the West including Hu Shih, Fu Ssu-nien, Ch'en Yin-k'o, and Li Chi were deeply discontent with traditional views of historical evidence, which were, according to them, self-indulgent treatments of purely written data such as texts related to Confucian classics and Sung woodblock prints. Scholars of the new generation, viewed the nature of historical evidence differently. I delved into the archives of the Institute of History and Philology at the Academia Sinica to probe how new views of historical evidence held by Fu Ssu-nien, Ch'en Yin-k'o, and Li Chi, layed a conceptual foundation for Fu's rescue of the Ming-Ch'ing archives in the 1920s and Li Chi's excavation of Shang capital at An-yang in the late 1920s.