Is Zhang Zheng's calligraphy collectible?

Zhang Zheng's calligraphy is very valuable for collection. Without embellishment, it will eventually achieve something. His works are good at running script, and his handwriting is fascinating and incisive; Rules and regulations are sparse and strange, and talents are vertical and horizontal; Zhang Zheng's calligraphy view is full of worries and troubles, and its momentum is like a rainbow, which is perfect for Wang Xizhi's character! The works have been presented to foreign ambassadors, business elites and international friends as national gifts for many times!