First, the uniqueness of calligraphy is the standard and yardstick to test the learning effect.
When learning calligraphy, we should use our own calligraphy style to measure it. If everyone writes exactly like the ancients, it is impossible to test their learning effect, only that they imitate it very much. We should compare our own works with those of the ancients and form our own unique style, so as to achieve a certain learning effect.
Second, calligraphy is the only way to reflect one's level.
people often say that words are like people. A calligraphy work can not only reflect the writer's level, but also reflect their cultivation, knowledge, sentiment, experience and emotion. If we write like the ancients, what we reflect is no different from the ancients, and we can't form our own style and truly reflect our own knowledge and feelings, which is invalid. Therefore, calligraphy should be its own.