Who sits alone in the dusk?

The next sentence of this poem is "Ziweihua vs Ziweilang".

"Who is the companion who sits alone at dusk? Ziwei is opposite Ziweilang." These two sentences mean that a person is sitting alone in the dusk, who is his partner? Only Ziweihua and Ziweilang are affectionate. This is about the loneliness of life. Life is lonely after all, and the only thing that can save you is yourself.