During our meanderings through Beijing, I came across a display showing some of the ways they used to tell time in ancient China (and other parts of the world I can only assume) before there were clocks as we know them today.
One example used burning incense, string and bells while the other was simply a candle with markings on it.
I suspect there are a lot fewer house fires since phasing this time telling system out.
Give the above video a watch to see how they told the time way back in old China!
Enjoy!