Research on general clauses of civil law Research on hard cases of civil law Research on issues and cases of civil law Research on the preface of civil law Lecture on general principles of civil law 并列题名:Research on issues and cases of civil law 并列题名:Research on hard cases of civil law 并列题名:Lecture on general principles of civil law Concise overview on general principles of civil law Research on the personhood property of civil law