There is only one grandchild in the Nan family, Nan Jinheng, and his father and two brothers. Unfortunately, his brother-in-law's son has congenital heart disease. He died of illness when he was four years old. Mr. Nan is very precious to his remaining grandson. For as long as he can remember, there have always been a bunch of tall people in black clothes around him. There is only one person of the same age as him, and Grandpa said that he can train him to be his most capable assistant.
Afterwards, he indeed became his most effective assistant and someone he will never forget for the rest of his life.
Intention: Love yourself more