Why do foreigners regard calligraphy as a fashion?

With the improvement of China's economic development level and international status, China culture is increasingly recognized by people in other countries in the world. However, China's calligraphy is the core of China culture. Generally, I have seen famous artists with real talent and practical learning create on the spot, and the brush is flowing on the rice paper, leaving the beauty of stippling and lines. Incredibly, a soft brush can be rich enough to be felt by many people in the world, so it has become the pursuit of many people and a fashion.