一支笔诉说白般思念一张纸寄托千万爱恋
[yī zhī bĭ sù shuō bái bān sī niàn yī zhāng zhĭ jì tuō qiān wàn ài liàn]
It conveys that writing with a pen represents endless longing, while folding paper holds deep love; symbolizes using simple means to express complex emotions such as love and longing.