Tai Sui is also called Jiazi. The sixty Jiazi are composed by the sequentially-matched ten Heavenly Stems and twelve Earthly Branches, from the first element Jiazi to the last Guihai. According to one of the Taoist classics: the sixty Jiazi refer to the sixty Tai Sui which governed the Earth in turn. All the sixty Tai Sui were commanded by the Dipper Mother. Since the sixty Tai Sui represent sixty years in one cycle, it is believed that each Tai Sui is responsible for protecting the respective people who were born in the year that specific Tai Sui related to. So people would worship the related Tai Sui in order to be blessed.