Circle of Chalk (Chinese: 灰闌記; pinyin: huīlán jì, sometimes translated Chalk Circle, The Circle of Chalk, or A Circle of Chalk), by Li Qianfu (also transliterated as Li Ch'ien-fu, Li Xingdao, Li Hsing-tao, or Li Xingfu), is a Yuan dynasty (1259–1368) Chinese classical zaju verse play and gong'an crime drama, in four acts with a prologue. It was preserved in a collection entitled Yuan-chu-po-cheng, or The Hundred Pieces. The Chinese language original is known for the beauty of its lyrical verse, and considered a Yuan masterpiece; a series of translations and revisions inspired several popular modern plays.