For comunication between them, apart from smoke signs!
The printing press
printing paper powder compass...
They Acknowledge more knowledge.
Woodblock printing i thinking
Woodblock printing i thinking
The Chinese invented printing. They invented it with wood blocks
Block printing.
# The art of making paper. # The art of printing. # Gunpowder. # The compass.
The Chinese invented block printing. However, some say that the Koreans invented it, and the Chinese just improved it.
The Chinese The Chinese
The Chinese created. Ching Chong.
Chinese