Is the calligraphy of calligrapher Ganlu valuable?

Calligrapher Ganlu's calligraphy is precious, showing simplicity, grandeur and flexibility. The Zen calligraphy of the calligrapher is elegant, modest and loving, with ups and downs, rapid and steady, dripping and carefree, in one go. Calligrapher Ganlu puts the content and artistic conception of the book in the change of stippling lines, or the front or side, changing and changing, breaking with the trend, and it is natural.