operational approach
0 1
First of all, we take the pen out of the box, open the battery, and unscrew the battery in the opposite direction. There is a+sign (positive pole) where the battery is placed. Put the positive pole of the battery (the+sign is placed in the battery slot) here to remind everyone that if the positive and negative poles of the battery are reversed, the battery will discharge instantly.
02
Screw in the battery, screw off the gold pen, and we will take out the mechanical pencil bars and lead cores. First put a lead into the pen tube from the back of the pen tube and gently push it to the end to use. (If you think the refill is too short, you can gently push the black pen to extend it. Note: When the lead wire is too long to extend backward, we can gently push the black pen tip, take it out after the lead wire becomes longer, and reinstall it from the back of the pen tube. )
03
Never put only one lead at a time, otherwise it will be blocked and unusable! I'm teaching you how to take out the residual lead. When the remaining lead is used up or broken, the refill will always retract and cannot be used, so we should check whether the pencil rod is blocked or broken. The pen tip can be moved when pushed back, and will pop up when released. It's time to take out the residual lead.
04
Put the pen holder into the pen holder, otherwise, the pen holder will not fall off, which proves that it is in place. We can use the gold pen container normally after it is screwed. Normal sitting posture, normal writing, lying down can't write out.
Special tips
Parents should also pay attention to 1 when using positive eye protection pens. Pay attention to use your eyes for 40-50 minutes and rest for 3-5 minutes. Looking at the distance for a long time, parents should not relax their vigilance against their children. Without a pen in hand, parents have no worries. These things will relieve fatigue. When reading and writing, the light should be moderate, neither too strong nor too dark, and the light should be soft. 2. Keep the correct posture when reading, writing and playing computer at close range. The height of the seat should be appropriate, and the distance between the eyes and things should be kept at about 33 cm. 3. Mix whole grains, eat more vegetables and fruits, and don't be picky about food. Lack of vitamins in food is prone to night blindness and dry eye. Lack of trace elements chromium and calcium in food is prone to myopia. 4. Eat less sweets. Too much sugar will produce a large number of acidic substances in the blood, and the combination of acid and salt in the body, especially calcium, will reduce the blood calcium, affect the toughness of the eye wall, make the eye axis easy to elongate, and promote the occurrence and development of myopia. 5. Take an active part in physical exercise to enhance physical fitness. 6. Insist on doing correct eye exercises. 7. Don't wipe your eyes with dirty hands. 8. Keep enough sleep time. 9. Poor eyesight should be checked and treated in time. 10. Parents should pay attention to their children's vision health.