The "wooden ox" is a historical wooden cart used in ancient China, primarily during the Han Dynasty. It was designed to transport goods and people, featuring a unique ox-like shape that allowed it to be pulled by animals. This innovative design helped improve trade and mobility in rural areas. The wooden ox is often associated with the legendary figure Zhang Heng, who is credited with its invention. It symbolizes the ingenuity of ancient Chinese engineering and reflects the importance of agriculture and commerce in the development of Chinese society.