What is "yuanye"

Yuanye ( Chinese 園冶, Pinyin yuán yě), variously translated as The Garden Treatise or The Craft of Gardens, is a 1631 work on garden design by Ji Cheng of the late Ming Dynasty. It is now considered the definitive work on garden design of the many produced during that period, and has been labeled as the first monograph dedicated to garden architecture in the world, and among the great masterpieces of garden literature.