"Word of mouth" should be your answer. This question has many answers though.
I believe the answer is: Market Economy
In the market economy, the type and price of a certain product would be completely driven by the the amount of supply and demand in the market. People in market economy had the right to choose the type of job or goods that they want to produce and tend to be benefited by inventing a new products that well liked by the market.
The belief was that there was a distinct
<span>order of</span> living
things:
Chinese,
barbarians, and
beasts. That's why they made all foreign diplomats bow down to the Emperor and why they completely isolated the country to show that it's self sufficient.
Answer: New theories emphasized using technology to find answers. New theories recognized that explanations were not always possible
