What does this poem mean?

The meaning is clear, that is, sad.

It is said that the great cold just passed (probably the solar term) or the great cold passed, and then my father passed or left the author.

No one spoke to the author. The author drinks by the fire, and the more he drinks, the more bitter he gets ... tears flow down like beads. It is estimated that the cold ahead is a solar term ... his father may have died.

This is closer to this meaning.

The last sentence is that I am heartbroken, but the friendship between father and son is still there and has not been cut off. ..

To sum up, it should be just after the great cold solar terms, that is, the sixth day of the twelfth lunar month, my old father died, and no one spoke anymore. Being alone, drinking around the stove and thinking about my father, I feel very sad. My heart ached with tears, but my father-son friendship with my father has not been cut off. ......

I just feel sad like a knife, cutting my father and son constantly. ....

Primitive analysis ....

Limited level, it is inevitable that there will be some deviations.

Welcome criticism ....