In order to shoot tricks early, the director doesn't think about whether the story of the script conforms to history, and the actor doesn't seriously think about whether his lines conform to historical facts in order to finish the play early. The crew will reduce the shooting time and cost, resulting in the script being shoddy from the inside out. In order to cater to the audience, some costume dramas will tamper with history to improve the ratings.
Sometimes TV dramas are forced by realistic factors. For example, the shooting place, such as the Yuanmingyuan in the Qing Dynasty, has been burned down, so it will definitely cost a lot of money to shoot, and costume dramas can only tamper with history.
Many costume dramas, such as Searching for Qin, are mostly imagined by directors. The final shot will only mislead the audience, and it is easier to be misled if you want to understand history through costume dramas.
If you want to understand history seriously, don't watch TV series, which will only mislead our understanding of history. We should calm down and watch documentaries or go to the library to read history books to understand the real history, seriously think about the historical facts in the book, and then watch costume dramas in combination with historical books to find out the problems of costume dramas, which will help us understand the real history.