《梦溪笔谈·故事一》
宋次道曾经记载《开元宰相奏请》以及郑畋《凤池稿草》《拟状注制集》等都用了很多四六文字，都是宰相亲自起草的。
宋次道记《开元宰相奏请》、郑畋《凤池稿草》、《拟状注制集》悉多用四六，皆宰相自草。
Song Cidao once recorded that "Requests from the Prime Ministers of the Kaiyuan Era", Zheng Tian's "Draft Notes from the Phoenix Pool", and "Collection of Annotated Sample Documents" all used many parallel prose, which were personally drafted by the Prime Ministers.