Generally speaking, paper is the basis of painting and calligraphy, and the original paper should have certain historical characteristics and cultural background. For example, ancient paper is generally thick in texture and will show golden luster in the sun, which should be noted.

For the works of celebrities, we can judge whether they conform to the characteristics of a famous work by analyzing and comparing the painting and calligraphy techniques. For example, Wang Xizhi's calligraphy mostly uses brushwork such as silk and bamboo, while Zhang Daqian's painting likes to use the technique of "painting with a pen". Moreover, the original pigments and inks have a certain historical and cultural background, and their colors will change with time. It is necessary to judge whether it conforms to the characteristics of the original through professional testing equipment.

Identification channel

1. Online appraisal platform: For example, the online appraisal platform for domain appraisal brings together many professional and senior appraisers in China, providing photos, videos, offline physical appraisal and other ways and services to meet the appraisal needs of various collectors.

2. Professional art appraisal institutions: such as Beijing Cultural Relics Appraisal Center and China Calligraphy and Painting Art Appraisal Institute. These institutions have professional appraisers and scientific appraisal processes, with high appraisal level and credibility.

3. Gallery: Some well-known galleries and auction companies usually invite some appraisers with certain popularity and reputation for appraisal.

4. Private appraisers: Some private appraisers can also provide appraisal services, but they need to pay attention to their professional level and credibility.