According to the Scottish researcher Joseph Needham, the Chinese made many first-known discoveries and developments. Major technological contributions from China include early seismological detectors, matches, paper, sliding calipers, the double-action piston pump, cast iron, the iron plough, the multi-tube seed drill, the wheelbarrow, the suspension bridge, the parachute, natural gas as fuel, the magnetic compass, the raised-relief map, the propeller, the crossbow, the South Pointing Chariot, and gun powder. Other Chinese discoveries and inventions from the Medieval period, according to Joseph Needham's research, include: the paddle wheel boat, block printing and movable type, phosphorescent paint, chain drive, the escapement mechanism, and the spinning wheel.
The solid-fuel rocket was invented in China about 1150, nearly 200 years after the invention of black powder (which acted as the rocket's fuel). At the same time that the age of exploration was occurring in the West, the Chinese emperors of the Ming Dynasty also sent ships, some reaching Africa. But the enterprises were not further funded, halting further exploration and development. When Ferdinand Magellan's ships reached Brunei in 1521, they found a wealthy city that had been fortified by Chinese engineers, and protected by a breakwater. Antonio Pigafetta noted that much of the technology of Brunei was equal to Western technology of the time. Also, there were more cannons in Brunei than on Magellan's ships, and the Chinese merchants to the Brunei court had sold them spectacles and porcelain, which were rarities in Europe. Chinese scientific understanding, however, was less developed than that in the West.
