《太平广记·卷二百一十三·画四》
李叔詹深感惊异，再三询问范山人，他才告诉说：我能够禁管住颜色，不让它随便沈散罢了！
李惊异，苦诘之，唯言善能禁彩色。不令沉散而已。
 Li Shuzhen was deeply astonished and repeatedly questioned the secluded Taoist. Only then did the secluded Taoist say, "I can hold the color in place to prevent it from diffusing at random."