Situ Jinse's adoptive parents originally had a biological daughter named Situ Lanyu, who was then given to Situ Jinse's adoptive father's brother.
The daughter of Situ Jinse's adoptive uncle died young from an illness, and his wife was so shocked that she became somewhat mentally unstable.
Situ Lanyu and the daughter of Situ Jinse's adoptive uncle were of the same age.
After the daughter of Situ Jinse's adoptive uncle passed away prematurely, his wife, upon seeing Situ Lanyu, held onto her and refused to let go, making a huge scene, insisting that Situ Lanyu was her daughter.
Left with no choice, Situ Jinse's adoptive uncle consulted with Situ Jinse's adoptive father and temporarily took Situ Lanyu to their home to raise, planning to return her once his wife got pregnant and had another child.
Feeling sympathetic toward his brother, Situ Jinse's adoptive father agreed.
However, Situ Jinse's adoptive uncle's wife could not conceive again.
