What's the difference between Yijing and Zhouyi?

There is no difference between the two. Zhouyi belongs to the Book of Changes. There is no difference between them. The Book of Changes is an ancient classic that expounds the changes of Vientiane in the world, and it is a profound dialectical philosophical work. Including Lianshan, Ghost Stories and Zhouyi, of which Lianshan and Ghost Stories have been lost, and only Zhouyi is left in the world. The Book of Changes, known as the source of ten thousand classics, is the general program of China traditional culture, which contains simple and profound natural laws and harmonious dialectical thoughts, and is the crystallization of the wisdom of the Chinese nation for 5,000 years. The Book of Changes is one of the oldest documents in China, which can be divided into broad and narrow sense. The Book of Changes in a broad sense consists of three books: Lianshan, Guizang and Zhouyi. Unfortunately, Lianshan and Guizang have all been lost. As far as the content is concerned, these "three changes" are all 64 individual hexagrams with eight diagrams overlapping. What is the specific difference? Probably because the dynasties were different, they were all divination textbooks of Xia, Shang and Zhou dynasties, and only Zhouyi was handed down. According to relevant legends, Fu created the Eight Diagrams and developed sixty-four hexagrams on the basis of the Eight Diagrams. These three parts, together with epigrams, eight diagrams, sixty-four hexagrams and epigrams created by Duke Zhou, constitute the classic part of the Book of Changes. This Book of Changes is a reduced version of the Book of Changes mentioned earlier. This classic is equivalent to ancient divination and divination textbooks, but the textbooks are very abstruse, and we still need auxiliary interpretation to understand them. At this time, an auxiliary reading called Ten Wings appeared. Eleven Wings, also known as Yi Zhuan, is a part of the biography in Zhouyi, and it is a book that interprets the classics of Zhouyi. Because of Confucius' pursuit of Zhouyi, many people think that the author of Ten Wings is Confucius, but it is not. Ten Wings was probably written in the Warring States Period. The narrow sense of the Book of Changes, namely the Book of Changes, is a simple divination, as concise as a textbook; Biography, on the other hand, contains a lot of historical philosophy and speculation, which makes the Book of Changes no longer a simple reference book for divination and fortune-telling. The Book of Changes was written very early, around the Western Zhou Dynasty. There are three books of changes, one of which is Zhouyi, which has been handed down from generation to generation. "Zhou" in Zhouyi refers to the Zhou Dynasty, and "Yi" means change. The Book of Changes is the conclusion that Zhou Wenwang reached in prison. It is divided into 30 hexagrams of Shangjing and 34 hexagrams of Xia Jing ... The meaning of the characters has evolved with the development of the times, and the content of Yijing has been difficult to understand in the Spring and Autumn Period and the Warring States Period. Also for its biography, for Yi Chuan, but also for the ten wings. Confucius' contribution to the Book of Changes is to regard it as a classic and list it in the Four Books and Five Classics. It's easy to go back to Tibet by leaving the geomantic omen and so on to Lianshan alone. Therefore, most schools of thought when a hundred schools of thought contend are from the Book of Changes. A hundred schools of thought said that they all originated from this book, and they all originated from these hexagrams painted in the Book of Changes. In fact, there are two kinds of I Ching, one is Lianshan Yi, the other is Guizang Yi, and the other is Zhouyi, which are collectively called "three changes". The Book of Changes in Lianshan is the Book of Changes in Shennong era, and the position of the eight diagrams drawn is different from the Book of Changes. The Book of Changes in the era of the Yellow Emperor was the Book of Changes in Tibet. Zhouyi is Zhouyi. Lianshan Yi began with the root of hexagrams, Guizang Yi began with hexagrams Kun, and in Yijing it began with the stem of hexagrams, which is the difference between the three Yi. Speaking of which, there should be a concept. Now people talk about the Book of Changes, often confined to this Book of Changes, because some people say that Lian Shan Yi and Gui Zang Yi have been lost. Actually, is there any more? This is a big problem. It can be said that this set of things in the "Jianghu" that we China people are talking about now, such as medicine, geomantic omen and Taoism, are the combination of the two Yi-ology, namely, linking mountains and returning to Tibet.