1.
The capital of China during the Qin dynasty
2.
A barrier made of walls across China's northern frontier
3.
A device that uses the position of shadows cast by the sun to tell them the time of day
4.
A device that measures the strength of earthquakes
5.
The practice of inserting fine needles through the skin at specific points to cure disease or relieve pain
6.
A network of trade routes that stretched across Asia from China to the Mediterranean sea
7.
A canal linking norther and souther China built during the Sui dynasty
8.
The capital of China under the Song dynasty
9.
A thin, beautiful type of pottery
10.
A mixture of powders used in guns and explosives
11.
An instrument that uses Earth's magnetic field to show direction
12.
A body of unelected government officials
14.
A huge palace complex built by Ming emperors of China
15.
A policy of avoiding contact with other countries
