How to understand the sentence "white flowers bloom, but flowers fall in dreams"?

white flowers bloom, but flowers fall in dreams.

This sentence is from Hans' Ali's Dream Castle, which tells the love story between Ali and peach.

Here is the story:

White flowers bloom

Ali has nine lives.

One, two, three, four, five, six, seven, eight and nine, which Ali counted seriously before he was born!

"one, three, four ...

one, two, five, six ...

one, three, five, six, seven ...

Kao, can you stand still? ！”

Ali's mother gave birth during childbirth, and when she was born, she used her first life. If she didn't use it, the other eight lives would have no chance to be used together ...

Ali drank all the white paint as milk when she was one week old, and the second life was used like this ...

Ali robbed food when she was one month old, but she chose the wrong target and was almost killed. The third life contributed ...

When Ali was two months old, he put the roof in big letters to look at the stars, and fell asleep. He accidentally rolled downstairs in the middle of the night, and the fourth life ...

When Ali was three months old, he stole the fish fillets hung on the wall by the old lady next door, and the English-Chinese dictionary thrown out hit him, and the fifth life just died ...

Ali. Holding his mother in his arms and crying to death, the sixth life vanished like smoke with his mother ...

Ali went to the forest to explore and threw pebbles to write down his way, but when he reached the depths of the forest, the sky began to snow heavily and he got lost ... The seventh life ...

Ali fell in love with peaches when he was six months old. Peach said that she especially liked white roses, and if she could get them, she would marry him ...

Ali watched the mysterious garden of the wizard all night, and finally, when the white flowers were blooming and carefully picked, they were found by the guardian ...

The eighth life ...

And Ali's love fell like this ...

Ali had only one last life left, and he was special.

time flies until death comes.

Ali thought: Instead of dying of old age, I might as well try to pick that white rose with my last life ...

White flowers bloom and flowers fall in my dreams ...