Kapok is a specialty of Guangdong and the city flower of Guangzhou. There are five petals with strong curves, surrounded by a cluster of dense yellow stamens, gathered in a compact receptacle. Every flower is as big as a rice bowl, spreading downward from the top of the tree in the face of spring. Kapok, also known as hero flower, even if it is a special hero in autumn. When it fell from the tree, it remained intact in the air, spun all the way down, and then fell to the ground with a bang. There are many flowers under the tree, and the flowers don't fade or fade. This is a heroic farewell to the world.

Cotton, seed fiber of Malvaceae, is native to subtropics. The plant is shrubby and can grow to 6 meters high in tropical areas, usually 1 to 2 meters. The flowers are milky white, turn dark red shortly after flowering, and then wither, leaving a small green capsule called cotton boll. There are cottonseed in cotton bolls, and the fluff on cottonseed grows from cottonseed hulls and fills cotton bolls. The cotton peach splits when it matures, revealing soft fibers. The fiber is white to white with yellow, about 2 to 4 cm long and contains about 87-90% cellulose. The countries with the highest cotton production are China, the United States and India.