What can an idiom consist of "one" and "nothing"?

The number of plum blossoms is not an idiom, but a book.

The number of plum blossoms is one of the ancient divination methods in China. Now plum blossom heart change is another name for plum blossom easy to count. According to legend, it was written by Shao Yong, a Yi scholar in Song Dynasty. The Book of Changes of Plum Blossoms originated from Hanshu. It is a divination book based on mathematics in Yi-ology and combined with "Xiang-ology" in Yi-ology. According to legend, when Shao Yong used it, every hexagram must be correct, and it always works. According to innate gossip's mathematical theory, the number of plum blossoms is changeable, that is, dry one, change two, keep three, shake four, lose five, talk six, root seven and Kun eight. Divination can be started anytime and anywhere, and there are various ways of divination. The number of plum blossoms is one of the ancient divination methods in China. Now plum blossom heart change is another name for plum blossom easy to count. According to legend, it was written by Shao Yong, a Yi scholar in Song Dynasty. The Book of Changes of Plum Blossoms originated from Hanshu. It is a divination book based on mathematics in Yi-ology and combined with "Xiang-ology" in Yi-ology. According to legend, when Shao Yong used it, every hexagram must be correct, and it always works. According to innate gossip's mathematical theory, the number of plum blossoms is changeable, that is, dry one, change two, keep three, shake four, lose five, talk six, root seven and Kun eight. Divination can be started anytime and anywhere, and there are various ways of divination.