1. Observe the paper ink color of calligraphy and painting: the paper color of the original Chen calligraphy and painting is dark and has a sense of historical precipitation. If the paper color is too bright, or the ink color is too light, it may be forged or imitated.
2. Pay attention to the seals and signatures on paintings and calligraphy: original paintings and calligraphy are generally equipped with seals and signatures, and the fonts and patterns of seals and signatures are very clear and natural.
3. Seek the help of professional appraisal institutions: If the above methods cannot determine the authenticity of calligraphy and painting, you can seek the help of professional appraisal institutions.