1936 The Lecture Notes on an Introduction to History, taught by Qi Sihe in Peiping Normal University and Peking University, is a masterpiece that integrates Chinese and Western historiography and still has great reference value today. He also wrote many related papers. As early as 1929, he wrote "On Historical Philosophy in Pre-Qin Dynasty", which outlined China's rich historical philosophy content in the pre-Qin period with the method of western historical philosophy. Comparing Chinese and Western historiography, he thinks that China's ancient historiography is the most developed, profound and all-encompassing, and the twenty-four histories are the ocean of knowledge and the confluence of culture. However, European historiography was still dominated by political and military history until the18th century, and there was no economic and cultural content until the19th century. Since modern times, China's historiography has fallen behind, so it is necessary to absorb the advantages of western historiography and transform the national history. When discussing the scholarship in the late Qing Dynasty, he once said that Kang Youwei's works "A Test of New Learning and Pseudo-Classics" and "A Test of Confucius System Reform" were political movements. After the political movement, no one cared about their books. However, up to now, some sinologists are still refuting Kang Liang to show the subtlety of his method. In fact, the theory of this school has long passed in China. In addition, China's translation movement in the late Qing Dynasty, Yan Fu's translation of The Theory of Evolution, and Lin Qinnan's novel translation are all famous for their academic achievements, which have exerted great influence on society. However, the translation of world history is only some textbooks, and there are no first-class works, so that we only have a half-knowledge of western history, but we don't know much about it. It has only educational function and no academic value. These views are still worthy of attention today. Only by understanding can we put forward such profound insights.

In his later years, Qi Sihe wrote "Xiongnu's westward migration and its activities in Europe". Later, some people put forward opinions on this article, that is, the exact location of the westward migration site. But the significance of Qi Sihe's writing lies in proving that Hungarians in European history are Huns. This is another masterpiece of Mr. Wang. He plans to write a history of great national migration, from the westward migration of Chinese Huns to the migration of Germans. The migration of Huns is the most important thing here. Mr. Wang believes that there are many records about the activities of the northern Xiongnu in China, while the activities of the Xiongnu in Europe are recorded by Roman historians, and the records of Chinese and Western documents are the same. However, many western scholars do not recognize Hungarians as Huns, which is actually cutting off history. His efforts are to prove the connection between Chinese and western records and the mutual influence of Chinese and western history. It didn't come true because of his infirmity in his later years.