I lost my notebook in the library this afternoon. Will the finder please call me?

I lost my notebook in the library this afternoon. Its cover is blue and white. I wrote my name on the first paper. There are about two hundred papers. Many important notes and information are written on it. They are important to me. Will the finder please call me? My name is Xiang Yun and my telephone number is 5320147. Here are my sincere thanks.

今天下午，我在图书馆弄丢了我的笔记本，封面时蓝白色的。第一页上写了我的名字。笔记本大概有200页，上面记有许多重要的笔记和信息，那些对我很重要。请拾到者与我联系。我的名字叫向云，电话号码是5320147。特在此感谢！