1. Basic learning of Braille (1) Braille point training (2) Learning of initials, finals, overall recognition of syllables and tones (3) Learning of numbers, English letters and punctuation marks; 2. Primary school Chinese texts (1st grade ~ 6th grade) (1) National Braille (mandatory) (2) Full-tone Braille (optional) (3) Non-pitched Braille (optional); 3. Main features See text, hear voice, touch braille High refresh rate, high reliability, cost-effective, easy to carry. 4. Parents and teachers can help blind students learn Braille and textual knowledge to improve their learning efficiency