The Female Soldier had little education and was not very clever.
Some of the characters she knew, she had learned from the Courtesan while cleaning the flower boat all those years ago. The rest she had picked up in literacy classes during training after enlisting. She was dull and slower to react than others, and looked none too bright. But that day, the instant she saw Zheng Yu's token, inspiration struck, and she suddenly understood everything. Then she felt as if she had fallen into an icy abyss.
The "Courtesan" before her was as clever as her elder sister. They were twins and alike in every way. If her elder sister had been so meticulous, how could the younger one be careless?
Wouldn't someone who had accidentally killed a man fear that the truth would come to light?
How could she allow the corpse to retain anything that could prove his identity?
Never mind that she had killed the King's Supervising Censor. Even if Zheng Yu had been an ordinary man, one human life would have been enough to make the "Courtesan" pay with her own. If that token fell into someone else's hands and they followed the clues to her door, could she still hope to live?
The Female Soldier couldn't guess the "Courtesan's" true purpose.
Only when the "Courtesan" moved her elder sister's grave and buried Zheng Yu in a pauper's cemetery did the Female Soldier begin to suspect something.
Perhaps because of the Female Soldier's friendship with her elder sister, the "Courtesan" hadn't killed her to silence her. In fact, after the Female Soldier helped her out a few times, she even grew somewhat closer to her. Watching the "Courtesan's" actions, the Female Soldier finally understood: the "Courtesan" was a mole.
A mole who had murdered a