In the late autumn of the 13th year of the Republic of China, the water in the Huangpu River was turbid and brown, like an overturned inkstone. Shen Zhiyi stood on the deck of the Kangti. The hem of her windbreaker was lifted by the river wind, revealing the moon-white Parisian dress underneath. When she wore this skirt to board the ship three years ago, the hem could still cover her ankles, but now it is shorter. On the exposed calf, there is a scar scratched by a nail during surveying and mapping at the Paris construction site, like a faded medal.