the great wall of china
It was used for trade,
the qin dynasty was so important because they reunited china, the whole country was named after qin (chin)
The seismograph was important to ancient china because it could detect an earthquake and warn people so they could escape.
Acupuncture was important to the ancient Chinese because it was their form of medicine but with using needles that put pressure on you.
The Yellow River (Huang He) and Yangtze River were important rivers in ancient China.
there rivers
so at trade they can have a money everyone wants
An emperor was a very important person in China.
Ancient China discovered and invented many things, such as gunpowder, fireworks, and paper.
To eat
Because ancient means old, so they call it Ancient China.
They had lots of types of religions so it must been important. Also Priests are third in the social structure in ancient China, so religion must be important in ancient China.