It's important because it told the ancient Chinese which direction the earthquakes were from up to 310 miles away.
when zhang heng who seismograph invented it now people now when a earthquakes
the first seismograph had about 8 dragons on the outside of the egg shaped pot. the dragons had balls in their mouth that were pure metal. if theground shook, the ball would drop from the mouth, and go into a metal frog shaped cup.
An emperor was a very important person in China.
To eat
Oracle bones were important in China because that was there first paper to write on
The seismograph was important to ancient china because it could detect an earthquake and warn people so they could escape.
china
It was invented in china in ancient tokyo by your mother
when zhang heng who seismograph invented it now people now when a earthquakes
If for ancient China, (i am assuming because you said did) it is seismograph
the first seismograph had about 8 dragons on the outside of the egg shaped pot. the dragons had balls in their mouth that were pure metal. if theground shook, the ball would drop from the mouth, and go into a metal frog shaped cup.
China
The Yellow River (Huang He) and Yangtze River were important rivers in ancient China.
there rivers
the great wall of china
An emperor was a very important person in China.
The four main inventions from ancient china is the compass, gunpowder, papermaking and printing. Here are six more: fireworks silk wheelbarrow seismograph abacus matches