Shen Zijin is the youngest son of Minister Shen of Works and serves as a junior officer in the Jinwu Guard. He is well-mannered and respectful, performing his salutes and greetings flawlessly. Driven by deep love and worry for his ill mother, who has been suffering from loss of appetite and wasting away, he musters courage to approach the seemingly aloof Eldest Princess to request recipes for Sushan and soup that previously helped her. His visit is marked by nervousness and flustered behavior; he scratches his head, blushes, and stammers when speaking to Rong Li. He is genuinely grateful for her generosity, wiping tears with his sleeve and nearly kneeling in thanks. He also notices Rong Li's attention shift to Zhan Qin, quickly understanding her purpose for visiting the government office and excusing himself promptly. His character highlights filial devotion and humility.