I had to read the story twice because the writing is terse in many places. Of course, I read the English version as I don’t know Chinese.
That said, the key to understand the story better is to also watch the movie by Ang Lee.
The story is set in Shanghai and is about a young girl, Wong Chia Chi who is a student and member of a political theater group. She and the group members use their theatrical acting abilities in active resistance to the Japanese occupation in China in the period of 1938 - 1942.
I find the ending confusing and abrupt with the protagonist failing in the task she set out to do.
Overall, the story isn’t a fast-paced thriller but thought provoking if you like a long drama.