忆往昔浅墨素笺

This translates into 'Recalling Days of the Past With Lightly Inked Plain Sheets'. Here '忆往昔' means to recall the past, while shallow ink and simple note imply writing down thoughts or stories in a modest way using ink which is traditionally associated with literary creation and memory recording in Chinese culture, especially during historical eras where writing was mainly done by brush and ink. This screen name indicates a user who appreciates reminiscence and history.