How is Zhang Hai's calligraphy?

Zhang Hai is the former chairman of China Book Association. The old man's calligraphy is still capable and level, but Zhang Hai's calligraphy lacks his own style, which is very mediocre and the overall effect is not good. It is said that there are still typos. When the old man was the chairman of the book association, calligraphy was very popular, almost worth a word, but after the old man left, the price of his calligraphy works plummeted, almost to the point where no one cared. You need to buy Zhang Hai's calligraphy carefully. If the price is too high, don't sell it