(Image: https://upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Portuguese_Man-O-War_29.jpg/440px-Portuguese_Man-O-War_29.jpg)Basically, bangcacloai - https://bangcacloai.com/ - there was no education. Monks and priests as well as a few nobility could read and write, but the population as a whole couldn't.