The answer is cotton.

Mystery: flowers are not flowers, they are shiny and can be spun when picked by hand. (knocking a plant)

Answer: cotton

Mystery: the green branches and leaves are peach trees, and the external bones are hairy. One day, peaches will mature and bones will grow hairy. (knocking a plant)

Answer: cotton

Mystery: green bitter fleabane bitter fleabane, yellow flowers, two bells, white flowers, go back to your parents' home. (knocking a plant)

Answer: cotton

Mystery: red branches, green peaches, flowers and hair (beating a plant)

Answer: cotton

Mystery: yellow flowers and green peaches spit white hair when cooked. (knocking a plant)

Answer: cotton

Mystery: Born and raised, he can bloom twice a year. First, the golden flower bears green fruit, and then the silver flower becomes a thousand (one plant).

Answer: cotton

Mystery: Flowers blossom, white clouds float home, bounce around and send them to the factory for spinning. (knocking a plant)

Answer: cotton

Mystery: A small tree is planted in the ground, and the golden flowers bloom with silver. (Hit a thing)

Answer: cotton

Mystery: a tree is not tall and full of peaches, peaches are fleshless and full of hair, white hair is wrapped in black beads, and white beads are wrapped in black beads. (knocking a plant)

Answer: cotton

Answer: Yesterday, the green leaves bloomed with red flowers. Now, the peach branches are drooping, the peaches disappear as soon as they are ripe, and the trees are covered with white snowflakes. (knocking a plant)

Answer: cotton

Mystery: Green branches, green leaves and red roots. A tree has two kinds of flowers. First, golden flowers bear green fruits, and then silver flowers are brought home. (knocking a plant)

Answer: cotton

Mystery: Small trees grow many peaches, and the peaches split to produce white flowers. Seeds can extract oil and flowers can spin silk. (knocking a plant)

Answer: cotton

Mystery: flowers, not flowers. There are no flowers in the garden. Walking to the farm in autumn, there are sparkling flowers everywhere. (knocking a plant)

Answer: cotton

Mystery: A tree is a thousand branches, with yellow flowers on the branches. When peaches are ripe, they can spin silk. (knocking a plant)

Answer: cotton

Mystery: blossom and bear peach, bear peach and blossom. Peaches can't be eaten, they can only be planted. (knocking a plant)

Answer: cotton

Mystery: the green branches and leaves are covered with peaches, and the bones outside are hairy. Until one day, the peach was old and the bones inside were hairy. (knocking a plant)

Answer: cotton