Ch. 401The Curved-Shaft Plow and the Waterwheel
Key plot points and events
- After the emperor banishes his mother to the Cold Palace, the Ninth Prince—now merely Chen Yankun—is stripped of his title and ordered to leave his manor.
- Blaming Concubine Jin for his downfall, Chen Yankun confronts and beats her. She bites his arm in self-defense; he strikes her head, killing her, then kicks her body.
- As a commoner, Chen Yankun faces harassment from the princes he once antagonized.
- Song Yaoyao has delayed giving the emperor the promised Mini Tillers because she is unsure how to explain where they came from. The emperor asks Assistant Minister Song about the delay, but Song reassures him that his daughter will keep her word.
- With spring plowing approaching, Song Yaoyao decides to present the Mini Tillers and also promote the Curved-Shaft Plow, which can be more widely adopted. She has Guagua prepare plans and instructions for both the plow and a Waterwheel, and plans to take the materials to the palace with her father.
Character developments and interactions
- Chen Yankun turns his anger and humiliation on Concubine Jin, showing how little compassion remains in him. Concubine Jin, believing he has come to visit her, quickly fights back when he attacks.
- Song Yaoyao moves from hesitation toward action, deciding that revealing several inventions at once is preferable to repeatedly inventing explanations.
- Guagua encourages her to act quickly and helps prepare the designs, while Song questions its suggestion that she claim an immortal gave her the technology.
- Assistant Minister Song defends his daughter’s reliability when the emperor wonders whether she has forgotten her promise.
Significant themes
- Downfall and retribution: Chen Yankun’s loss of status leaves him vulnerable to the same political hostility he once wielded, while Concubine Jin’s death reflects the consequences of their cruelty and ambition.
- Practical innovation and public benefit: Song Yaoyao seeks ways to improve agriculture, choosing the widely useful Curved-Shaft Plow and Waterwheel alongside the Mini Tillers.
- Trust, secrecy, and responsibility: Song wants to help the empire but worries about explaining her knowledge; Guagua supports her while helping conceal the source of the designs.