Zhou Yan is a middle school student in Sichuan Province. She has got a new mobile phone (手机)! It's a gift from her parents. They want her to use it to learn English during the coming winter holiday. But Zhou uses it to watch videos (视频) and send messages (信息). She plays with her mobile phone all the time, even after going to bed! Her parents get very angry about that.
This morning, when she gets up, Zhou finds that she can't move her hands. Her parents take her to a doctor right away. After checking her carefully, the doctor says Zhou Yuan has got "mobile phone disease (疾病)". She'd better stop using her mobile phone right away, or she will have more problems (问题). Now Zhou uses her mobile phone for 30 minutes a day.
So, if you've just got a phone, watch out! Don't use it too much. Or you will get mobile phone disease. Remember if you find your arms and fingers start to hurt (疼), go to see a doctor right away. That's important.