The element of drama in which it expresses the private thoughts of a character is the POV or also known as the Point of View, this is the thoughts of the character where they couldn't speak out loud and remain their thoughts. These could be there worries, the memories that they recall or experiences that happen to their life that they don't want to share to other people and remains private.
From 10th to 13th century, Chinese farming in the South China region was increasingly commercialized.
Explanation:
There was a burgeoning increase in trade during that time. This meant that the agriculture of china was at that time
-- commercialized to a great extent making cash crops more than the ones needed for subsistence.
-- using the cash crops and trading with northern china
--use of old tools but with some moderns arrangements like the till.
--use of a manure style that would be copied across the world
--finding of trade networks in collaboration with south east Asia.
-- a network of multi season crops spread across the land.