Describe the subject and one central theme of "A Poem of Changgan" by Li Po. Cite evidence from the poem to support your response.

The subject matter of "A Poem of Changgan" is love. One central theme of the poem is steadfastness in love. In the following lines, the speaker describes her love for her husband lasting beyond this life:

But at fifteen I straightened my brows and laughed,

Learning that no dust could ever seal our love,

That even unto death I would await you by my post

And would never lose heart in the tower of silent watching.