《太平广记·卷三·神仙三》
坐车到崇芳阁下，抬头一看，果然空中有一条红色的龙腾云驾雾，把崇芳阁的门窗都笼罩了。
果有赤龙如雾，来蔽户牖。
After riding his carriage to the Chongfang Pavilion, he looked up and saw that there was indeed a red dragon in the sky, riding mist and clouds and shrouding the pavilion's windows and doors.