What do you mean by one or two orioles at the bottom of the leaves at three or four o'clock on the pond?

The moss in Chi Pan is green and fresh, and the chirping of orioles under the leaves in the forest is crisp and pleasant.

Numbers in poetry represent quantifiers and describe a degree.

Taibi on the pool is three or four o'clock, which means not much, just one o'clock.

One or two orioles at the bottom of the leaves, one or two also indicate that orioles sing infrequently and intermittently.