Chen Mian, owner of a nursing home, was considered too expensive by family members because she adhered to the bottom line of professional care. Seeing that the nursing business was super profitable, landlord Wang Jianguo openly tore up the unexpired contract and forcefully occupied the storefront to open the "Happy Home" cheap nursing home, also withholding ten constant-temperature nursing beds to offset so-called "utility bills." After moving away, Wang Jianguo's nursing home expanded wildly—cutting caregivers, cramming beds, and using expired frozen meat costing three yuan a catty as food, ultimately resulting in fourteen elderly people suffering collective food poisoning and one death. When law enforcement departments came to investigate, Chen Mian produced years of retained nursing records, transfer injury photos, and complete timeline evidence, cooperating with the investigation to restore the full truth.