In the middle of the Chinese chess board, there is often a gap with the words "Chu River" and "Han Jie" written on it, which serve as the dividing line between the red and black sides. This is a chess metaphor for the historical Chu-Han conflict between Xiang Yu, the overlord of Western Chu, and Liu Bang, the founder of Han Dynasty. The remains of chess cultural relics and text maps left by the ancients all prove that the two armies set up camp and faced each other, separated by the "Chu River and Han Boundary", and the colors were black and red. They fought for the "Ninth Five-Year Plan". In the battle, "wisdom but not strength" ", working together to capture the enemy's "general (marshal)", etc., are all embedded in the cultural heritage of the Chu-Han War, and are related to the epoch-making development of the Chinese nation - the foundation of the Han Dynasty, in many aspects of history, geography, and humanities. consistent. What does the Chuhe-Han boundary on the chess board mean? Comes from the Chu-Han War. The "Chu River-Han Boundary" is located in the Chenggao area of ??Xingyang (belonging to Zhengzhou) in ancient times. It is bordered by the Yellow River to the north, Mang Mountain to the west, plains to the east, and Songshan Mountain to the south. It has been a battlefield for military strategists of all ages. In 203 BC, Liu Bang sent troops to attack Chu. Xiang Yu was short of food and troops, so he was forced to put forward the requirement of "dividing the world in the middle and cutting the divide to the west for Han and to the east for Chu." From then on, the term "Chu River-Han Boundary" came into being. To this day, there are still two ancient city ruins facing each other on Guangwu Mountain in Xingyang. The one in the west is called Hanwang City and the one in the east is called Bawang City. Legend has it that they were built by Liu Bang and Xiang Yu. Between the two cities, there is a large ditch about 300 meters wide. This is what people usually call the divide, and it is also the basis for the boundary river marked on the chessboard. Xingyang, Henan is the birthplace of Chinese chess. More than 2,200 years ago, King Xiang Yu of Chu and King Liu Bang of Han used Xingyang as their main battlefield and launched a four-year fierce battle. They used the divide of Xingyang as the boundary to divide the world, which became one of the most exciting episodes in the long history of China. . The swords and swords dimmed, and the drums and horns competed in the distance. When the smoke of war gradually dissipated in the long river of history, the Chu-He-Han realm was forever fixed on the Chinese chess board, indicating Xingyang’s special status in the history of Chinese chess development. It is known as the capital of Chinese chess. According to "Historical Records": "The one with a chasm to the west is Han, and the one with a chasm to the east is Chu." In this way, history has turned the chasm into the "boundary between Chu and Han". As the gap between the "Chu River and Han Boundaries", it not only remains in Xingyang, a "famous eastern county", in the glorious process of Chinese history, but also on the Chinese chess board, making Xingyang the capital of Chinese chess. reputation.