yóujiàn lǐ xiě le qǐng jiàn fùjiàn, jiéguǒ fùjiàn wàng le dài, zhè shì hěnduō rén dōu fàn guò de cuò

邮件里写了“请见附件”，结果附件忘了带，这是很多人都犯过的错。

In the email, they wrote 'Please see attachment,' but forgot to attach it—a mistake many people have made.