The Book of Changes (Yijing, also known as I Ching) is generally recognized as the oldest among the ancient Chinese classics, tracing back to the yin-yang symbolic system that, according to traditional mythology, was created by the legendary Fu Xi (mid-29th century BCE). The Yijing's mystical origins and the dynamic nature of its image-numbers--the various diagrams, trigrams, and hexagrams--gave rise to subsequent interpretations by sages over millennia, along with differences in understanding. Ever since the Han dynasty (206 BCE-220 CE), there have been debates between two schools of thought: the image-number school, which focuses on the symbols as a means to divination; and the philosophy school, which values the work for its cosmological and ontological insights. Assimilating ideas from both schools, Ma Baoshan reestablishes the logical image-number system and reaffirms that this image-number logic is the foundation for understanding the Book of Changes in the context of contemporary research.