Is Liu Yinan's calligraphy collectible?

Liu Yinan's calligraphy is very collectible. According to relevant data, Liu Yinan, also known as Da 'an and Xu Zhutang, was born in Lantian, Shaanxi Province, 1965. Now he is the director of China Calligraphers Association, the vice chairman of Ningxia Calligraphers Association, and a researcher of Ningxia Literature and History Museum. He has won the highest achievement award in calligraphy category and the first prize in creation category in Helanshan Literature and Art Award for many times.