I have seen his handwriting, which belongs to the "eccentric type". If it is a positive evaluator, it will say: the book style is Gu Zhuo, steep and vigorous; If it is a negative critic, it will say: calligraphy is strange and unpredictable, and it belongs to "ghost book". In my opinion, it belongs to the latter.
At present, his quotation is not low, thousands of square meters. My opinion: fast-declining calligraphy is just like waste paper, and it is not appropriate to blindly spend a lot of money to collect it. Pure personal opinion.