Some things never change

This letter, dated 856, was discovered in a sealed cave library in western China.

Translated:

Yesterday, having drunk too much, I was intoxicated as to pass all bounds; but none of the rude and coarse language I used was uttered in a conscious state. The next morning, after hearing others speak on the subject, I realised what had happened, whereupon I was overwhelmed with confusion and ready to sink into the earth with shame.