"Who knows to learn from Beijing" comes from Sima Guang's Poem for the Palace at Night in the Northern Song Dynasty.

The whole poem "Poems written by Imperial Admiral in a comfortable twilight paradise" is as follows:

It is easy to know who painted the well flowers, and the sound of pulleys quickly dispelled the spring cry.

There are still four or five days to leave the garden, and there are still three or two flowers in the leaves.

I still bring wine when I am sick, and I can't help drinking tea when I am awake.

I don't think carpe diem will hinder my youth, so I want to go home.