In fact, calligraphers write good words and then let craftsmen carve them on stone tablets. The difference between posts (ink marks) is as follows: for example, the stonemason's poor skills lead to distortion, the stone tablet falls off due to wind and sun, and the stone tablet is damaged due to war and fire (there are many examples of this reason! ), even if properly preserved, there is still a kind of harm. Is the tablet used to learn calligraphy? Can't you move the tablet? You just need to print rubbings. Rubbings do great damage to inscriptions, blurring the edges of strokes and even erasing thinner strokes. These are the reasons why the tablet is different from the post. But there are "three good monuments", good calligraphers and good masons. There is little difference between the steles, which have the spirit of steles and have a different taste. Ink is of great value to learners.