When did the thirty-six plan appear?

Spring and Autumn Period and Warring States Period. "Thirty-six Strategies" refers to the thirty-six strategies of China's ancient art of war, written by Sun Tzu. Sun Tzu was born in the Spring and Autumn Period and the Warring States Period, and Thirty-six strategies appeared in the Spring and Autumn Period and the Warring States Period. Thirty-six Strategies reveals the philosophical connotation and internal laws of military strategy, and it is a rare work.