I don't know if there is a Han Dynasty, what about the Wei and Jin Dynasties

I don't know if there is a Han Dynasty, what about the Wei and Jin Dynasties

I don't know if there is a Han Dynasty, what about the Wei and Jin Dynasties? It comes from the Peach Blossom Land. I don't know if I know the Three Kingdoms of the Han Dynasty, let alone the Wei and Jin Dynasties.

explain

It describes being divorced from reality for a long time and ignorant of social conditions, especially new things. It also describes poor knowledge and shallow learning.

source

Tao Yuanming of the Jin Dynasty wrote in Taohuayuan Ji: "our ancestors avoided the chaos of the Qin Dynasty and led their wives to come here. They didn't come back, so they separated from outsiders. When we ask what is the present age, we don't know whether there is a Han Dynasty or the Wei and Jin Dynasties. "