Diao Aiqing, 19-year-old first year student at Nanjing University’s Adult Education College, was last seen alive on January 10, 1996

Her body had been boiled and cut into more than 2,000 pieces and wrapped in bags

The family of a student brutally murdered 25 years ago in one of China’s most notorious cold cases has launched a lawsuit against her university for failing in its duty of care.