"Mom, I'm sorry I can't be with you. After I die, please transplant my liver into Dad's body to save him." Before swallowing 200 sleeping pills, Liling (a pseudonym), a 13-year-old girl from Wuxi who is in the first year of junior high school and comes from a poor family, left such a farewell letter for her mother. More than ten hours after her suicide attempt, Liling was miraculously saved, but she still remains in mortal danger.