Regarding the history of China, not only Chinese scholars are studying and thinking, but also scholars in the United States, Europe and other places are trying to find meaningful explanations. The recent dramatic changes in the world situation will inevitably affect the research ideas of these scholars. First, the global phenomenon of transformation has a huge impact on the production of contemporary Chinese historical research. Second, the changes in Chinese society itself have also had a significant impact on European and American scholars' research on China. Can we know from this passage? ['The current study of Chinese history is carried out under the interaction of internal and external environmental factors.', 'European and American scholars have a deeper understanding of Chinese history than Chinese scholars.', "Studies of Chinese history are more affected by global factors than by China's own environment.", 'Research on Chinese history is still in its infancy.']