Stroke order (simplified Chinese: 笔顺; traditional Chinese: 筆順; pinyin: bǐshùn; Yale: bāt seuhn; Japanese: 筆順 hitsujun or 書き順 kaki-jun; Korean: 필순 筆順 pilsun or 획순 畫順 hoeksun; Vietnamese: bút thuận 筆順) refers to the order in which the strokes of a Chinese character (or Chinese derivative character) are written. A stroke is a movement of a writing instrument on a writing surface. Chinese characters are used in various forms in Chinese, Japanese, Korean, and in Vietnamese. They are known as Hanzi in Chinese, kanji in Japanese, Hanja in Korean, and Hán tự in Vietnamese.
Chinese characters are basically logograms constructed with strokes. Over the millennia a set of generally agreed rules have been developed by custom. Minor variations exist between countries, but the basic principles remain the same, namely that writing characters should be economical, with the fewest hand movements to write the most strokes possible. This promotes writing speed, accuracy, and readability. This idea is particularly important since as learners progress, characters often get more complex. Since stroke order also aids learning and memorization, students are often taught about it from a very early age in schools and encouraged to follow them.