The O 'Henry ending is both unexpected and reasonable.

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O 'Henry ending is a classic ending form of short stories, which is famous for its unexpected and dramatic features. In O Henry's novels, the story often unfolds in an unexpected way, while the ending is often surprising and reasonable. This ending not only left a deep impression on readers, but also became the paradigm of many short stories.

The characteristic of O 'Henry ending is that it often breaks the reader's expectation when the story develops to a certain extent, which makes people have a strong psychological contrast. This contrast may come from the sudden reversal of the protagonist's fate, or the direction of the story is completely unexpected. This unexpected change is not only surprising, but also laments the author's ingenuity and wit.

for example, in O. Henry's famous short story "The Police and the Hymn", the protagonist Soapy is a homeless tramp who tries to go to prison for the winter before winter comes. He tried to get the attention of the police by various methods, but all failed.

However, when he heard the church bell ringing and realized that he had become homeless, he was caught by the police. This ending is unexpected, because readers may expect Soapy to successfully avoid being arrested, or at least not to be arrested so quickly. But in this story, Soapy was quickly arrested because his attempt was discovered, which made people laugh and cry.

The significance of O 'Henry ending is that it can make readers have a strong * * * sound and emotional response. This way of ending not only makes the story more vivid and interesting, but also profoundly reflects the characteristics of human nature and the practical problems of society. Through this way of ending, O Henry successfully created a series of distinctive characters, and at the same time expressed his unique views and profound reflections on the society at that time.