First of all, I can think of four great inventions in ancient China, papermaking, printing, compass, gunpowder and so on. Before the invention of papermaking, people wrote characters on bamboo slips, which was not only heavy and difficult to carry, but also heavy and costly. The invention of papermaking has made great contributions to the spread of human culture and the progress of world civilization.
There was no copier in ancient times, and the invention of printing greatly improved the efficiency of cultural exchange. The invention of the compass also pointed out the direction for people at that time, especially made an indelible contribution to the navigation of various countries at that time, so it has been used ever since. The invention of gunpowder was mainly used in military affairs, and later spread to Arabia, and then from Arabia to Europe.
Besides the four great inventions, there are many famous inventions in the history of our country. For example, wooden ox, seismograph, Luban lock, umbrella, keel waterwheel, Ma Fei umbrella, astronomical calendar, armillary sphere, lantern, water raft, standard watch, hourglass, abacus, tide gauge, rope, bronze mirror, kite, iron plow, major clock, sliding surveying and mapping instrument, hydraulic bellows, porcelain, watertight cabin in ship and spinning wheel.
In addition, there are helicopter horizontal rotors and propellers, matches, chess, arch bridges, irons, paper money, playing cards, chain drives, vaccine immunization, mechanical clocks, mines, glasses, toothbrushes, wheelbarrows, stern rudders, pure sulfur extraction, balanced square sails, hydraulic grinders, echo walls, artificial gold, suspension bridges and so on. These great inventions have provided convenience for our daily life and laid the foundation for modern science and technology.