Claim: China invented high-speed rail, mobile payment, e-commerce, and bike-sharing. Reality Check verdict: China did not invent any of these technologies - but it has led the way in their ...

China's four great ancient inventions made tremendous contributions to the world's economy and the culture of mankind. They were also important symbols of China's role as a great world civilization.

Historian Han Qi on why the exchange of scientific knowledge is so important - from astronomy and salt wells to high-speed ...