To be sure, books and film and television dramas are not really complete history. Books may be more systematic and self-evident than TV dramas, but they don't necessarily mean they are true. The real history only exists among the people, and some major historical events are buried in the long river of history for various reasons and the needs of interest groups. If you need to know the real history, you can't just look at it from one aspect. Official history, unofficial history and field trip will be closer to the truth of history!