李平因在学校使用手机被学校处分,他感到很困惑,写信向你（姓名：李华）求助。请根据以下提示给李平回信。开头与结尾已给出。
注意：1. 可适当增加细节，以使行文连贯； 2. 词数:100左右。
Dear Li Ping,
Your letter reached me yesterday.It is said in your letter that you are punished for using a cell-phone. I’m sorry to hear that.
Yours,
Li Hua
