Watercolor grade certificate is a professional qualification certificate. There are three systems for the calligraphy level examination, one is the China calligraphy level examination sponsored by Beijing Education Examinations Institute, the other is the calligraphy level examination sponsored by the Art Development Center of the Ministry of Culture, and the other is the social calligraphy level examination sponsored by the Calligraphers Association. The former was approved by the education department, while the latter was approved by the Ministry of Culture. Upon inquiry, the calligraphy grading certificate is a professional qualification certificate. A vocational qualification certificate is a certificate of what academic level or job position you are engaged in. The professional and technical qualifications of full-time college graduates recognized by the national education administrative department can be obtained through the preliminary examination method.