- Male protagonist: Shen Zhongqing, 30 years old, is the garrison envoy of Ningguo and Wuhu in southern Anhui. He has 5,000 troops to protect the country. He will never participate in the internal fighting among the warlord factions. He only resists the bandits roaming the border and protects the safety of the people in Wanjiang. He has a calm and reserved personality, is very strict in running the army, has a heart for the common people, and is proficient in calligraphy, painting and poetry.
- Female protagonist: Lin Sushi, 22 years old, the direct descendant of the Suzhou embroidery family of the Lin family. Due to the banditry in northern Jiangsu, her family moved to Wuhu and ran the "Sushi Embroidery Workshop". She is gentle, tenacious and has a righteous heart. She is good at weaving encrypted battlefield bandages and medicine-impregnated protective gear. She is independent and does not cling to the powerful.
