As a writing teacher around children, this AI calligraphy pen is connected with intelligent interactive APP and mobile phone. Through learning-practice-testing-evaluation, scientific closed-loop calligraphy system, one-on-one real-time guidance for children, paper screen synchronization, supporting scientific courses, from introductory training to intensive practice, automatic generation of personalized calligraphy practice report, accurate positioning of weak items, and rapid improvement of calligraphy practice effect, scientific and intelligent calligraphy practice makes every stroke written have memory meaning.