What advances in the development of science and technology were achieved in China during the Middle Ages?

Chinese scientists were ahead of most colleagues from other countries in their inventions:

Gunpowder, which greatly simplified the way people live in construction and at the same time brings destruction and death.
A compass that gives a person the correct orientation in space.
The paper of this invention has been used for a long time by many generations.
The Great Wall of China, which still fascinates the minds of mankind in our time.
A wheelbarrow, the simplest device that has been used in construction work and in homework.
Seismograph.
Alcohol, the Chinese were the first to master the distillation of fermented liquid.
The Great Chinese Canal, which was used for shipping.
The aerial beast and hang glider, an invention that has its fans in our time.
Silk, a commodity that is used, without exaggeration, by the entire population of the earth, the secret of the production of which the Chinese have kept secret for a long time.