What does the ironing post in "The Cement Road Covered with Golden Palms" mean?

It means smooth and neat. "The Cement Road Paved with Golden Palms" is a poem. Ironing here means flat and neat. Ironing the cement road means that the cement road surface is very flat and smooth, as if it has been ironed. Here, we use Ironing is used to describe the smoothness of cement pavement, and it can also be understood as the poet's praise and description of beautiful things.