Han Yu, a man of letters from the T'ang dynasty (618-907 A.D.) once wrote, "I'm shy of forty, yet my hair is hoary white, my eyes are dim in sight, and my teeth have begun to wiggle.
唐朝文學家韓愈曾寫道：「吾年未四十，而視茫茫，而發蒼蒼，而齒牙動搖… …。」