The title of the film is taken from a line in the Ming Dynasty poet Chen Zilong's "Marching from the Army", "Dreaming of Chang 'an 30,000 miles, the sea breeze blows off the west end of the moraine". Among them, "Chang 'an" clearly means the Tang Dynasty, and actually represents the ideal land pursued by the Tang Dynasty poets, while "thirty thousand miles" seems to be the length, but it is actually the distance between the Tang Dynasty poets and the ideal.

The title of the film is taken from a line in the Ming Dynasty poet Chen Zilong's "Marching from the Army", 梦到长安三万里，海风吹断碛西头 "Dreaming of Chang 'an 30,000 miles, the sea breeze blows off the west end of the moraine". Among them, "Chang 'an" clearly means the Tang Dynasty, and actually represents the ideal land pursued by the Tang Dynasty poets, while "thirty thousand miles" seems to be the length, but it is actually the distance between the Tang Dynasty poets and the ideal.