Mohism or Moism (Chinese: 墨家; pinyin: Mòjiā; literally "School of Mo") was a Chinese philosophy developed by the followers of Mozi (also referred to as Mo Tzu (Master Mo), Latinized as Micius), 470 BC–c.391 BC. It evolved at about the same time as Confucianism, Taoism and Legalism, and was one of the four main philosophic schools during the Spring and Autumn Period (from 770 BC to 480 BC) and the Warring States Period (from 479 BC to 221 BC). During that time, Mohism (墨 Mo) was seen as a major rival to Confucianism (儒 Ru). The Qin dynasty, which united China in 221 BC, adopted Legalism as the official government philosophy and suppressed all other philosophic schools. The Han dynasty that followed adopted Confucianism as the official state philosophy, as did most other successive dynasties, though Daoism and later Buddhism also played an important part in later Chinese life and thought, while Mohism all but disappeared as a separate school of thought. Mohist books were later merged into Taoist canon.