The Heaven rained grains, and spirits were crying at night.
The reason on why the spirits were crying at night was that they knew from that day the Chinese Characters were born, Humans could create Talismans from the usage of certain Chinese Characters to dispel and control them.
So it is thus clear that the idea existed long ago that some special words or characters were able to impeach and control spirits.
Cang Jie (仓颉) A Legendary Person With 4 Eyes
