" Twelve Hours in Chang 'an " was an ancient spy drama set in the Tang Dynasty. It portrayed the political struggles and criminal activities in Chang' an City during the Tang Dynasty, showing the style and historical background of the Tang Dynasty. The play restored and presented some characteristics and styles of the Tang Dynasty to a certain extent in terms of clothing, architecture, etiquette, culture, and so on. For example, the costumes and accessories of the characters in the play were mostly based on the Tang Dynasty, and the buildings and streets of Chang 'an City also showed the style and characteristics of the Tang Dynasty. However, it should be noted that as an art form, the degree of restoration and presentation of TV dramas would inevitably be affected by subjective factors. Therefore, different people might have different opinions on whether "Chang 'an Twelve Hours" completely restored the style of the Tang Dynasty.