While preparing for the provincial adult vocational skills competition, Lin Cheng collapses in the workshop from overwork and malnutrition. As his colleagues rush to save him, more than a dozen worn-out remittance slips fall from the pocket of his shabby jacket. It turns out that for years, he has been collecting scrap and living an extremely frugal life to anonymously support older young adults in remote mountainous areas, helping them complete their adult vocational education.