The report also said that Wang's former subordinate, Chai Yongguang, the former deputy head of the Asian department of the CAIFC, was also sentenced to three years in prison on corruption charge, but the report didn't explain whether Chai's case had any connection with Wang's. The sources mentioned that Chai, who studied abroad at Sophia University in Tokyo, has published many research papers on Chinese military strategy in recent years. Wang is known to be a good friend of the Japan and Korea affairs expert, Yu Jiafu, who, along with his wife, was earlier detailed under "double regulations" (a form of house arrest for members of the Chinese Communist Party suspected of wrongdoing). Their names [Wang and Yu], however, have still remained on the CAIFC Web site until now.