I don't know which dynasty's history recorded such a story.
It is said that there was a little girl in Jiangnan named Xiangsi. When he was born, he was in troubled times, his family was broken up, and he was left alone with an old servant to raise him until he was seven years old. When he was dying, the servant left a small box and asked him to cherish it carefully.
Acacia dug out the small box under the red bean tree before leaving the hospital, and was shocked to find a yellowed letter. A girl from the 18th generation in the south of the Yangtze River and Gu Changan, the eldest son of the Gu family in the north, must follow the instructions of their ancestors and get married when they reach adulthood.
Xiangsi has a quiet temperament. She often reads ancient books or makes vegetarian tea under the red bean tree in front of the yard, and her life is quite comfortable. Until one day, on the old red bean tree in the yard, among the red fruits and green leaves, the little boy in white asked the girl under the tree doubtfully: Is it boring like this every day?