Acacia into a disease, Mo Wen Tianya also belongs to Mo Wen. What does that mean?

Expressed the yearning for parting, as well as the uncertainty and helplessness of the return date. Acacia into a disease, Mo Wen Tianya also belongs to Mo Wen. This sentence comes from Du Mu's "Cold Feelings at the Fenmen at Dawn in Autumn Night" in the Tang Dynasty. Acacia into a disease, Mo Wen Tianya also belongs to Mo Wen. It means that the feeling of missing has become a disease. Don't ask me how much I miss that place, and don't ask me when I can come back. This sentence expresses the author's longing for leaving and his uncertainty and helplessness about the return date.