佛道論衡=the Debate of Buddha and Taoism; 沙門敬王論=the Debate of Monks' Need to Revere the King; 三教合一=three religions combine into one; 空間隱喻=Orientational Metaphors; 認知語言學
After the Southern and Northern Dynasties, and the short end of the Sui Dynasty, Tang Dynasty is carried out by a new civilization of peace and prosperity. This civilization is the international, multicultural world. Confucianism, Buddhism and Taoism have developed a culture of their own, in addition, provided by the Tang Dynasty, the country's official set the stage, also launched three of each other and argue that, at this stage, measuring up and down, one after another, observe the three religions has become interactive relationship between the development of one of the important field. Personally, involved in the debate the two scholars, Taoism Xuan Yan joy and release their own compilation of two important works to protect Buddhism. In this paper two crossing-cutting work time is Tang Emperor Longshu 2 year(AD 662) as the center to discuss the discourse, from the language point of view for analysis of spatial metaphor to explore the thinking behind the culture, and found that years of Longshu discourse has two different forms of argument types and mode of thinking, the impact of two works have started to recover back the boundaries of its incorporation documents, segmentation, and also this observation, comparing two types of Buddha/Taoism and Confucianism discourse on the similarities and differences. This shows that Confucianism, Buddhism and Taoism is not the relationship between the "Three Religions in one" could be roughly encompass the term.