Research on legal issues in cross-border education 并列题名：Research on legal issues in cross-border education Research on legal issues of cross-border data flows Research on legal issues of gene safety risk regulation Studies on legal issues in cross-border insolvency Research on legal issues of injuries in school physical education Research on legal issues in charity governance Research on legal issues of network judicial auction Research on legal issues of private equity fund regulation Research on legal issues of cross-border transaction of digital currency