The online teaching of fish-watching painting and calligraphy institute is formal. The online teaching platform of Guanyu Painting and Calligraphy Institute has obtained the school license issued by the Ministry of Education of People's Republic of China (PRC) (China) and is legally qualified to engage in online teaching. In addition, the platform has been certified by the International Education Accreditation Committee (IEAC), which proves that it has international-level teaching quality and educational resources. These certificates and certifications are powerful proof of the regularity and professionalism of the online teaching platform of Guanyu Painting and Calligraphy Institute.