This is a calligraphy work by writer Liu Wen.
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Although not yet See the real thing, but based on experience, it should be genuine. No one imitates the calligraphy and painting works of ordinary writers and other well-known figures in society, unless they are national figures.
The counterfeiters are all professionals, and they can practice whatever they want. No one specializes in the calligraphy and painting of a person who is not a person in the field of calligraphy and painting.