What is the main content of Li Qiuyuan's kapok fleeting time?

This story was written by the famous writer Li Qiuyuan. It tells the story that during the Japanese invasion of China more than 70 years ago, due to the plague, the parents of hero A Ning gave A Ning to his sister-in-law. Unfortunately, Mrs. Fu's son Gui offended Feng, the son of "fake Japan" at that time, and Gui was killed. After Pell's death, Sister-in-law Fu became silly, and every day, Uncle Fu talked in a dream, "Feng, kill! Kill! Kill! " Woke up with a start, finally one day, Uncle Fu sent the five-year-old to Fanpo and lived in Fanziyuan on Kapok Island for a long time. Knowing the news of Feng's murder, I got to know many people: Tang, a Japanese who committed suicide by caesarean section in order to protect Yongle ceremony, a patient aunt who ran away for her husband Ouyang Zhuo, Jasmine who blocked five Japanese shots for Uncle Bowen, and poor little girl Yue Hua. When the Japanese army began to search, some people disappeared inexplicably: Mr. Cai was killed by a Japanese patrol boat, A Hai was taken to the streets for public display, President Li was taken away from school, Mr. Zhou was wiped out, Sanshe was brutally tortured to death by the Japanese army, and Fan Po was killed by boss Lu ... On the day she left, Aunt Lin hid the tears dripping on A Ning's hands for 60 years. Sixty years later, A Ning returned to Kapok Island, and she understood everything …