Take Du Fu's poems as an example:
Jiangcun village
The clear river winds around the village, and everything in the village looks elegant in the long summer.
Since I left, I have come to Liang, and I am very close to seagulls in the water.
The old lady is using a chessboard, and the younger son is making a hook with an injection.
As long as some old friends give me some money, what do I ask?
Example 2:
The third of five poems about historic sites
Thousands of mountains and valleys are close to Jingmen, and girls grow up here.
She came out of the purple palace and entered the desert. Now she has become a green grave in the yellow dusk.
Her face! Can you imagine the spring wind? Back to the soul in the moonlight.
The Tatar song on her jade guitar tells her eternal sadness.
What you said in the supplementary question is "eight lines and seven words", which is wrong. A quatrain, also called a truncated sentence, is to intercept half of a metrical poem. So there are only four lines of quatrains, not eight. For example, Du Fu's most famous quatrains:
"Two orioles sing green willows, and egrets cover the sky."
My window framed the snow-covered western hills. My door often says "goodbye" to ships sailing eastward.