四不懂先生三不知小姐
[sì bù dŏng xiān shēng sān bù zhī xiăo jiĕ]
A whimsical self-introduction. In China’s four-character idioms, 'three don't knows' means complete ignorance about an event ('don't know when it started, the process, or the result'), while '四不懂' intensifies this meaning. This reflects a modest, possibly humorous take on one's perceived lack of knowledge about a lot of things.