Death of Wei Zexi

Wei Zexi (Chinese: 魏则西; pinyin: Wèi Zéxī; 1994–2016) was a 21-year old Chinese college student from Shaanxi who died after receiving DC-CIK, an experimental treatment for synovial sarcoma at the Second Hospital of the Beijing Armed Police Corps; he had learned of it from a promoted result on the Chinese search engine Baidu.

Wei's death led to an investigation by the Cyberspace Administration of China, prompting Chinese regulators to impose new restrictions on Baidu advertisements. State media outlets broadly condemned the role of the hospital and Baidu in his death, while users online additionally denounced Baidu's advertising practices. Baidu shares fell almost 14 percent in the days following reports of Wei's death.