Just talk about the benefits (it has been said before in history).
Judging from the advantages of brush calligraphy, in addition to improving hard pen calligraphy (which can make you pay more attention to the movement of the pen tip), you can also exercise the flexibility of the wrist joint and promote blood circulation (the hand writing brush characters will never be frostbitten in winter, provided that you practice it carefully). Calligraphy can nourish people's temperament. For example, a grumpy person who practices calligraphy for a long time can make him calm, introverted and less sharp. Moreover, calligraphy can exercise people's conception ability. The position of a word in the grid, the coordination of black and white and the proportion of space are called "knot words" in calligraphy, which is conducive to improving people's arrangement and coordination ability. At the same time, calligraphy can make people cautious. After all, in writing, we should not only pay attention to momentum, but also pay attention to details (for lines and cursive scripts), and calligraphy is to cultivate your ability to grasp details, imitate and even create.