Su Yan took the blood-stained military flag and sneaked into the deepest shadow of the war; Gu Chi was ordered to hunt her, but he recognized the unsent pins of his sister in every blood mark. The military doctor's prescription, the reverberation of the radio, the cook's misinformation, the enemy's experimental subjects... When the battlefield love letters are broken down into codes, every face hides an unspoken apology. The love letter she wrote to the dead will eventually turn into a blade that tears apart the war.
