The "Four Great Inventions" of ancient China are papermaking, the compass, gunpowder, and printing. These innovations significantly influenced not only Chinese society but also the world. Papermaking allowed for easier record-keeping and communication, while the compass improved navigation and exploration. Gunpowder revolutionized warfare and led to the development of various weapons, changing military strategies. Meanwhile, printing facilitated the spread of knowledge and literature, making books more accessible. Together, these inventions played a crucial role in shaping human history and culture.