What do you mean, "floating life is like a dream, floating dust is empty, and it is the geometry of happiness."

The whole life may be a big dream, and everything in the poet's eyes is just passing by. What is happiness for? Sad for what, thousands of turns, but it is like this. Life is like a dream, floating in the air, and there are many happy times.

Life is like a dream, for pleasure.

From Tang Dynasty —— Preface to the Spring Banquet of Brother Taohuayuan by Li Bai

The husband of heaven and earth, the inverse of everything; Time flies, and a hundred generations fly by. And floating like a dream, for joy geometry? The ancients walked by candlelight at night, not bad. Kuang Yangchun told me to smoke, and I made a big fake article. It will be a peach blossom garden and a happy family. Tuan Ji Shuai, all for Huilian. We sing, and we are ashamed of our happiness. You didn't get a reward, you can tell me. Give a banquet, sit on flowers, fly feathers and get drunk on the moon. Without a good hymn, why open your arms? If you don't follow this poem, you will be fined the number of drinks in the shrine.

This preface was written in the 21st year of Anlu Kaiyuan (733). Li Bai and his cousins drank wine and wrote poems at a spring banquet and wrote this preface for them. In the fifteenth year of Emperor Xuanzong of the Tang Dynasty (AD 727), Li Bai, 27, came to Anlu. Here, he married the granddaughter of the late Prime Minister Xu and raised a pair of children. In ten years, he went to Chang 'an in the west, traveled to wuyue in the east, went to Dongting in the south and arrived in Taiyuan in the north, leaving more than 100 famous works.

Just "floating like a dream" means: life is like a dream, how many happy times can you count?

The "floating dust" and "hundred turns and thousands of folds" you added here should be added later by others, especially the "hundred turns and thousands of folds" is somewhat puzzling. But you have to understand the general meaning without explanation.