Beijing. China has expressed serious concern and demanded a full investigation from the United States following the death of a Chinese semiconductor researcher. According to US media, the deceased researcher is Danhao Wang, who was affiliated with the University of Michigan.Reports indicate that his death occurred following intense questioning by federal investigators. The university confirmed that a researcher died after falling from a campus building on 19 March and is investigating the incident as a potential suicide.Liu Pengyu, spokesperson for the Chinese Embassy in the US, expressed deep sorrow over the incident and stated that the Chinese government has repeatedly...