The conclusion that can be drawn about how Confucianism influenced the social class system between Zhou rulers and their subjects is: Rulers understood that peasant farmers had to be treated respectfully so that they could produce enough food to feed the general population.
This is supported by the emphasis in the passage on approaching duties with reverence, being trustworthy, avoiding excesses, and employing labor only in the right seasons. These points suggest a recognition of the importance of the common people, particularly peasant farmers, and the need for rulers to treat them well to ensure the state's stability and food security.