《太平广记·卷二百零八·书三》
唐太宗李世民贞观十四年，自己用真草书写一套屏风，给群臣看。
唐太宗贞观十四年，自真草书屏风，以示群臣。
In the fourteenth year of Emperor Taizong of Tang Dynasty’s reign, Li Shimin wrote a set of screen in both regular script and cursive hand for his ministers’ enjoyment.