The Chu Shi Biao refers to either of two memorials written by Zhuge Liang, the Imperial Chancellor of the state of Shu during the Three Kingdoms period of China. He presented them to Liu Shan, the second emperor of Shu. The first Chu Shi Biao, which is referred to as the "Former Chu Shi Biao", was presented in 227 before Zhuge Liang embarked on the first of a series of military campaigns (commonly known as the Northern Expeditions) against Shu's rival state, Wei. The second, known as the "Later Chu Shi Biao", was supposedly submitted in 228 before Zhuge Liang left for the second Northern Expedition.