In the sixth year of Yuan You (109 1), Su Dongpo recalled the past events of European public affairs in Yingzhou, and wrote the book "Snow in the Gathering Stars Hall". At the end, there is a sentence "I told you to listen at that time, and you are not allowed to fight in white with your bare hands", which is called "the wind of white war" by later generations.
In the Northern Song Dynasty, Ouyang Xiu, Su Shi and others created this special method of describing objects-forbidden style (also known as white war style). Its method is to write metrical poems according to propositions, and it is forbidden to use words that are usually used to describe the appearance of an object.
When Ouyang Xiu, a writer in Song Dynasty, was appointed as the prefect of Yingzhou, he drank wine with his guests and wrote poems, banning words such as pear, plum, goose, crane, training and wadding.
After Su Shi followed Ouyang Zhonggong as the satrap, he invited the guests to write poems in rain and snow and forbade them to speak. Because the poet regards the physical object as an ingenious work, and wastes it if it is not used, it is regarded as a prohibition, just like being unarmed. Later, the ban on poetry was in vain.