1. personification: The author describes Yu Qiu as a living, emotional and capable person, and endows him with various human actions and languages, such as "with coolness and tenderness", "while you are not paying attention", "opening the door of autumn", "having a box of colorful pigments", "giving ginkgo trees yellow" and "blowing gold". Doing so can enhance the vividness and appeal of the article and make readers feel the magic and charm of autumn rain.
2. Metaphor: The author compares autumn rain to some common things in life, such as "it is a key", "it is like a curtain", "yellow leaves are like handfuls of small fans", "red maple leaves are like stamps" and "the field is like a golden ocean". Doing so can vividly show the changes and effects brought by autumn rain, and let readers have rich associations and imaginations.
3. Repetition: The author repeatedly uses the word "autumn rain" as the beginning of each natural paragraph in the article, forming the effect of repeated intervals. Doing so can highlight the theme and center of the article, strengthen the tone and rhythm, and express strong feelings.
4. Comparison: The author used many comparison sentences in the article, such as "purple, yellow, snow white …", "pear is fragrant, pineapple is sweet, and there are apples and oranges …", "Little magpies bring branches to build houses, little squirrels bring pinecones as food, and little frogs dig holes …" and so on. Doing so can list the colorful scenery and breath of autumn, increase the level and rhythm of the article, and show love and joy for autumn.