What were the great inventions of ancient China?

1. Papermaking: During the Han Dynasty, papermaking was invented to use paper as a portable and lightweight writing material to help people record ideas and events.

2. Compass: China has invented the compass, also known as the compass, since ancient times, and it has been widely used for ship navigation, fishing, mining, and military.

3. The Four Great Inventions: Cannon, printing, compass and papermaking are the four great inventions, which have great influence and significance on human society.

4. Gunpowder: During the Tang Dynasty, gunpowder was invented and it was widely used as a weapon and blasting tool.

5. Mobile movable type printing: During the Northern Song Dynasty, the Jin Jing also invented mobile movable type printing to replace the traditional printing method of woodcut plates.

6. Water Transportation Projects: In ancient China, numerous water transportation projects were built, such as the Grand Canal and the Han River Canal, which improved transportation conditions and promoted economic development.

7. Ancient Chinese Architecture: The art of architecture in ancient China was already very developed, including building construction, craftsmanship and decoration, gardening and landscaping, urban planning and other aspects.

8. Agricultural technology: Since ancient times, China has relied on excellent agricultural technology for its survival, such as water conservancy, farmland infrastructure, water-saving irrigation, etc., which has made China a highly productive agricultural power.

9. The Great Wall: The Great Wall, an ancient barrier, has become a cultural symbol of China and a very important military line of defense, playing a vital role in warding off wars and foreign invasions.

10. Traditional Chinese Medicine: Chinese traditional medicine is well known in the world, including herbal medicine, acupuncture, massage therapy, tai chi, etc., and its clinical effects have been recognized worldwide.