Comparative research on the social assistance between Hong Kong, Macao and the mainland of China 并列题名：Comparative research on the social assistance between Hong Kong, Macao and the mainland of China Comparative research on the system of access to government information in the EU and China Comparison on the old-age social welfare model between Hongkong and mainland of China Comparative research on animal welfare law between China and the European Union Comparative study of social assistance system between China and the United States Comparison research on criminal law and criminal juridical cooperation among Hongkong, Macau and Mainland of China