The TV series is set in the Tang Dynasty and tells the love story between Emperor Xuanzong and his beloved concubine Yang Guifei.

The costumes in the show are exquisite, especially Yang Guifei's blue long-sleeved dance dress, which showcases the elegance and nobility of women during the Tang Dynasty.

This type of clothing also holds significant historical importance as it represents the prosperity of Tang culture and the high level of artistic development at that time.

By watching this TV series, we can gain a better understanding of the history and culture of the Tang Dynasty, and appreciate the charm and romance of that era.