On Tuesday, the Gyeongbuk Provincial Police Agency revealed the identity of Zheng Changsheng, a 31-year-old Chinese man suspected of killing a female graduate student, also from China, in Gyeongsan, a city located some 290 kilometers southeast of Seoul in North Gyeongsang Province. Courtesy of Gyeongbuk Provincial Police AgencyPolice on Tuesday disclosed the identity of a Chinese man suspected of killing his student, also from China, in the southeastern city of Gyeongsan last month.Zheng Changsheng, 31, was placed under formal arrest Thursday for allegedly murdering the 25-year-old female student at his home in the city located some 290 kilometers southeast of…