The Earliest Seismoscope

A Seismoscope is an instrument used for predicting the coming of an earthquake. Who invented the first the earliest Seismoscope? The Chinese philosopher Chang Heng in 132AD.

The instrument looked like a wine jar. Its diameter was six feet. On the outside of the were eight dragon-heads. They faced the eight principal directions of the
compass. Below each of the dragon-heads was a toad. The toads had open mouths facing the dragon. There was a ball in the mouth of each dragon.
When an earthquake took place, one of the eight dragon-mouths would release a ball into the open mouth of the toad situated below. The place of the earthquake could be determined by the fallen ball.

I wonder how this person had the knowledge to invent this instrument. Where did he get his knowledge from? No one has been able to fully unravel the design of this instrument, and no one has duplicated it. How is that possible? With our advanced technology today, we are still at the mercy of earthquakes.

I can only suggest that he got his knowledge from some advanced beings, or aliens.