Regarding the historical records of the Vietnam War, textbooks from different countries and different versions often have great differences. The main reasons are as follows: 1. Different countries' positions and ideologies: The understanding and interpretation of the Vietnam War in different countries will be influenced by their own political, cultural and historical experiences. For example, when describing the war, textbooks published in the United States may pay more attention to describing the complex political decisions at home and abroad, the anti-war movement and the international situation, while the description of some negative events (such as some war atrocities) may be relatively brief; while in textbooks in Vietnam and some Eastern countries, the legitimacy of national liberation and anti-aggression is often emphasized, thus simplifying or concealing the improper behavior of the US or South Vietnamese government in the war. 2. The choice and purpose of compilation by the editors: When selecting content, the editors and authors of the textbooks cannot cover all historical facts, but often select materials that are conducive to cultivating specific values and historical views. This "selective record" is sometimes criticized as intentionally ignoring certain controversial events or details, but there is also a view that this is due to the simplification of educational content and the consideration of adapting to students' acceptance. 3. Historical memory and political sensitivity: The events involved in the Vietnam War are often highly politically sensitive. Detailed descriptions of certain historical events (such as the My Lai Massacre or other war crimes) may have an impact on the national and political image of a particular country. Therefore, when compiling textbooks, some details are sometimes blurred or omitted for the sake of "balancing historical facts and social stability". However, whether this practice constitutes "deliberate omission" often causes controversy among scholars, historical researchers and the public. 4. Subsequent revisions and reflections: In recent years, with the continuous deepening of historical research and the introduction of multiple perspectives, new history textbooks in many countries have begun to strive to present a more comprehensive and multi-angle narrative, trying to balance the views of all parties. Although there is still room for discussion on some sensitive issues, in general, the academic and educational circles are promoting the re-evaluation and public discussion of historical events. In general, it can be said that in the textbook records of the Vietnam War, there is indeed a phenomenon of selective narration of some facts due to different national conditions, political considerations and compilation purposes. Whether it constitutes "deliberate omission" and what facts are ignored depends not only on the specific content of the textbook, but also on how to understand and judge the balance between "objectivity" and "ideology" in historical narratives. For readers and researchers, consulting materials from multiple perspectives and comparing records from different sources is an important way to understand this complex historical issue.