People who watch the play carefully may notice the plot, so they don't notice some real details. Because no one has pointed out whether Twelve Chapters of Chang 'an is a cover story, but I don't know there are several places.
First place: When Cui took the hostages, they appeared in a white plastic water pipe that only existed in modern life. Many people didn't observe it because it was far from the camera.
Second place: When Xu and the drummer were fighting in the street, Daqi quoted a poem "The Moon Mountain is full of emperors, and the treasure is in the car". This poem was written by Li Shangyin, a poet in the late Tang Dynasty. Li Shangyin was born in 8 13 AD.
Third place: map of Chang 'an, several rooms on the right. The first label was Li Lin's house, and later it was changed to Lin Jiulang's house. I guess the name didn't change when I changed it. Then in the 28th episode, when Guo Lishi told Lin Zuolang about Jacky, the actor still said "Li Linyi", so this script was based on historical figures, and later it was tried.
Fourth place: When Zhang Xiaojing and Tan Qi went to find the right protagonist, they caught a defender. Both of them hit the stick on the bed with backhand. At this time, as long as you raise your hand, you can escape.
Fifth place: Lin Jiulang was tried in He Fu, written by Li Xiang in his confession. In order to pass the trial, The Longest Day In Chang'an changed all his names. For example, Xu's flag is written under his real name, and you can also see two rows of lanterns that say "Xiang Li". The first two episodes have been officially broadcast, and later the special effects were changed to Lin Xiang.