Are Jiang Shande's paintings and calligraphy collectible?

Jiang Shande's paintings and calligraphy are valuable for collection, because Jiang Shande is now the honorary chairman of the China Painting and Calligraphy Research Association; Member of China Senior Painting and Calligraphy Research Association; Member of China Culture and Art Development Promotion Association; Member of China Hard Pen Calligraphy Association; National first-class calligrapher; National first-class artist, recognized as the most valuable painter in China for collection and investment. And was awarded the title of "China Bai Jie Painting and Calligraphy Artist". Therefore, Jiang Shande's paintings and calligraphy are very collectible.