 For instance, Jing Fang (77–37 BCE) created the Hexagrams of Eight Palaces (ba gong gua): Qian ䷀, Kun ䷁, Zhen ䷲, Xun ䷸, Kan ䷜, Li ䷝, Gen ䷳, Dui ䷹. These eight palace hexagrams are the doubles of the eight trigrams. For Jing, each of these palace hexagrams leads a group of seven hexagrams. For example, Qian ䷀ leads ䷫, ䷠, ䷋, ䷓, ䷖, ䷢, ䷍. In this new alignment of hexagrams, there is both a steady increase or decrease of the yin and yang cosmic forces, and the the hidden power of the two forces even when they are dormant (for the new sequence of 64 hexagrams based on eight palaces, see Nielson 2003: 3).