It was Shiki who promoted a new form of haiku that emphasized realistic portrayals of nature and human life. A haiku is a short verse of 17 syllables, divided into units of five, seven, and five syllables. Haiku use simple expressions in ways that allow deeply felt emotions and a sense of discovery to be readily conveyed to the reader. As a rule, a haiku must have a word that is identified with a particular season. The popularity of haiku has spread beyond Japan to Europe, North America, Africa, and China.
Haiku composition is especially popular in the United States.
But the chestnut burs Are green.