What inventions allowed the ancient Chinese to build huge ships well before the rest of the world?

Ancient Chinese shipbuilding was advanced by several key inventions, including the use of the rudder, watertight compartments, and the development of the magnetic compass. The rudder, which was mounted at the stern, improved maneuverability and control, while watertight compartments enhanced the ships' safety and stability. Additionally, the magnetic compass facilitated navigation over long distances, enabling maritime exploration and trade. These innovations collectively allowed the Chinese to construct and operate large vessels effectively long before similar advancements occurred in other parts of the world.