What does the pool in ancient poetry generally correspond to?

1

Wild swallows wear willow rain,

The fish in the square pond play with the wind.

2

Bantang Honglian,

A white teacup.

three

Stream to pool ice.

four

Giant carp jumped into the pool and turned over several heavy algae;

Apes drink streams, vines hang a hundred feet.

five

Shen yuanluo

Small pond

six

Fish swim on the surface of the pool.

The heron stands at the top of the cliff.

7. Frost turns into dew, waves into waves, and chrysanthemums into ponds.