The primary character is Fuichin (フイチン), a Chinese teenager and daughter of the doorman of the residence of Liu Tai (リュウタイ), the patriarch of the wealthiest family in the city.

Fuichin is an independently minded tomboy, but is also kind and good-natured, and is distinguished by her two characteristic long braids of hair.

[1] Despite Fuichin's low status, her sunny disposition wins her the admiration of most people she encounters, including Liu Tai.

The series was a humorous yonkoma (four-panel comic strip) featuring a Chinese girl, which Ueda has described as a prototype version of Fuichin-san.

[4] She decided to create a manga series based on her life in Harbin, rendering an idyllic version of history in which the city's Chinese, Japanese and Russian populations live in harmony.