1. Sitting posture: keep your head straight, shoulders flat, body straight and feet secure when writing. 2. Head upright: The head should be upright and slightly low when writing. Can't lean left and right, head slightly forward, chin slightly inward, eyes one foot (about 30cm) away from the book. 3. Shoulder flat: the shoulders are flush, the arms are naturally extended, the right hand is writing, and the left hand is based on the book, so it is better to be natural and comfortable. 4. Body straightness: Keep your chest straight and back straight, with a fist (about 10 cm) from your chest to the edge of the table. 5. Foot safety: put your feet on the ground naturally and let them go naturally
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