One invention I think is important to China is the Compass. The compass is important because that is how an ancient times they got around from north to south and east to west. And today people still use a compass to get around, or maybe a compass is in their phone or car.
The history of the compass
The magnetic compass was first invented as a device for divination as early as the Chinese Han Dynasty (since about 206 BC). The compass was used in Song Dynasty China by the military for navigational orienteering by 1040–1044.
Why is the compass important?
Back in 206 BC they didn't have phones to help them find their way, so they used their compass to get from one place to another. Before the invention of the compass they used the stars, and sometimes the stars were inaccurate.