Maling Road Wedge written by an anonymous person in Yuan Dynasty: "At 3 o'clock in the middle of the night, I lost my position and led him to ride 330 horses, all of which were red flags, shooting three arrows outside the palace gate, beating gongs and drums, shouting and waving flags, which surprised him to the town of Mars."
Related information:
Yan y m: n: (sound. From the ghost, tired of the sound. I met something terrible in my dream.
The same meaning [nightmare]
Wandering in the waves, dreams become nightmares. -Han Yu's "Accompany Du's Tour to Two Temples in Xiangxi and Stay Alone"
Another example is a nightmare (nightmare); Nightmare (nightmare); Nightmare talk (talk in a dream)