在自然界中，小小树叶极普通，随处可见。然而，就是这不显眼的树叶，却与人类的文化结下不解之缘，留下了许多佳话。唐代的郑虔是个文人，出身寒门，生活十分清苦，勤奋好学，而没有钱买纸写字。一天，他漫步柿林，发现地面上落满了肥大色艳的柿叶，随即捡了几片带回，提... In nature, little leaves are commonplace. However, this unobtrusive leaf leaves an indissoluble bond with human culture, leaving many stories. Zheng Qian was a scholar in the Tang Dynasty. He was born in a cold state, his life was very bitter and hardworking, and he did not have the money to buy paper or writing. One day, he walked in persimmon, found on the ground covered with hypertrophy persimmon leaves, then picked up a few back, mention ...