What writing skills did Yongmei use in this poem? What is the theme of this poem?

Mainly anthropomorphic, such as: it's dusk alone, no intention to fight for spring, everyone is jealous. Theme: By describing the loneliness and sadness of plum blossom and the unique fragrance of cold ling, it shows the poet Lu You's aloof character, never associating with flatterers, not afraid of destruction, and being faithful and self-controlled.