That year, 12-year-old Jian Ranran, who had mental retardation, met Si Nan, who came from a big city. He came from a wealthy family, but suffered from congenital heart disease and needed surgery at the age of 18.
As Si Nan and Jian Ranran got along, they encouraged and supported each other.
In the blink of an eye, Si Nan turned 18 and left the city without any news. Only a letter to Jian Ranran every year gave her spiritual sustenance...
Intention: miss