What rhetorical devices are used in "Lotus Inn and Xinjian Break Up"? Write a sentence and tell me what kind of feelings the author expressed in this way.

Wang Changling (Tang Dynasty)-It was cold and rainy at night, and I saw the guests off alone in Chu. Friends, if my friends in Luoyang invite me; Just say I'm still Bing Xin Okho, and stick to my faith! The first two sentences describe the poet's sad and lonely mood and render the breath of cold rain. The last two sentences are the poet's sincere telling to his friends and his own voice. The misty rain spread all over Wudi River overnight; Seeing you off in the morning, I feel lonely and sad for Chushan! Friends, if relatives and friends in Luoyang ask about me; Just say I'm still Bing Xin and stick to my beliefs! The full text adopts metaphor and personification rhetoric.

Expressed the author's sad and lonely mood, and also told his friends about his elegant and pure personality.