In Miscellaneous Poems in the Mountains, Zhuliguan, Yuege on Mount Emei and Flute in Los Angeles on a Spring Night, what emotions does the Messenger of the Capital express?

Miscellaneous Poems in the Mountains expresses the existence of human beings and A Le's carefree mood through the smoke and birds in the mountains.

Zhu expressed the poet's quiet and lonely mood through the scene of playing the piano, whistling and accompanying the bright moon in the bamboo forest alone.

The Yuege in Emei Mountain expresses people's yearning with five place names.

Smelling the flute in Los Angeles on a Spring Night expresses the poet's homesickness through the description of the scenery.

By describing the frontier fortress, The Messenger to Beijing expresses the homesickness of people far away from the frontier fortress.