  Key to this amalgam were several concepts shared by both groups but deployed in very different ways. Early cosmological thinking depicts a cosmos ultimately composed of qi 氣 (the energy that constitutes and organizes matter and causes growth and change) in processes of constant change, based on the interactions of yin and yang 陰陽 and the Five Agents (wu xing 五行, Graham 1986, Raphals 1998 and 2013).