Shen Yuzhu is known throughout the martial world as the "Golden Abacus." She wields account books like blades and money like a weapon, and the business network of her Golden Abacus Pavilion spans the land. But while investigating an old case, she unexpectedly becomes bound to Ji Qingxuan, a ferocious and unruly swordsman. She pays him five hundred taels a month to protect her, while he relies on her to open up a supply route for medicine to suppress the bone-corroding poison within him.
When the abacus meets the sword, is the contract of silver and gold a scheme of mutual exploitation, or a two-way salvation in the face of despair?
Theme: True bonds have nothing to do with profit. They are the warmth of lighting each other's way through the dark.
