What do you mean by six or three?

The bottom-up third hexagram in Zhouyi is called Jiusan if it is yang hexagram, and Sanliu if it is yin hexagram. Nine represents yang and six represents yin.

The Book of Changes, one of the Three Changes of the Book of Changes (another view: the Book of Changes is three changes, not the Book of Changes), is one of the traditional classics. It is said that it was written by Zhou Wenwang Jichang, and its contents include the Book of Changes and the Book of Changes. Classics are mainly composed of 64 hexagrams and 384 hexagrams, each of which has its own interpretation (hexagrams) for divination. The Book of Changes did not put forward the concepts of Yin-Yang and Taiji, but was influenced by Taoism and Yin-Yang theory. It contains seven languages * * * and ten quatrains explaining hexagrams, which are collectively called Ten Wings. It is said that it was written by Confucius.