Young people from poor mountain villages who dare to enter, wear worn shoes and are hungry, are called "bumpkins" by their classmates, are blocked at the school gate, humiliated and beaten; their grandmothers are aggressive and their grandfathers are silent. My grandfather died in depression after being injured. He went south with his father, but was demoted because of his age. He even ranked first in the exam and was still isolated. After his grandmother passed away, he walked into a nameless inn at the end of an alley with a knife in his pocket and named himself Wuming. From then on, he was no longer a child who allowed others to bully him, but had to walk a road of no return alone. A solitary lamp is like a bean, it cannot illuminate the dark night, but it can illuminate the road ahead of him.