Main characters:
Li Yao (heroine): A modern girl, a young doctor of history, studying the history of the Tang Dynasty, and traveled to the Tang Dynasty by chance. She is smart and brave, but because she suddenly entered a strange time and space, she seemed very confused and uneasy at first.
Yang Chengyu (actor): A young general in the Tang Dynasty, handsome and unrestrained, with deep political vision and military talent. His father was a powerful official in the court, so he often faced tremendous pressure between family responsibilities and personal emotions.
Wang Guiren: A very powerful maid in the Tang Dynasty palace. She was deeply scheming because of her fight for favor, and secretly launched a series of frame-ups against Li Yao.
Li Jingming: Li Yao's friend in modern times. As an archaeologist, he studied ancient cultural relics with Li Yao. He found clues to the "Gate of Time" through research in modern times, and later helped Li Yao solve the mystery.
Tang Xuanzong: The emperor of the Tang Dynasty, gentle on the outside but complicated on the inside. He was one of the key figures Li Yao met in the early days after traveling through time, and he had a strong interest in Li Yao's appearance.
