Legal shift, that is, certain factors of the legal system of one country are imported from the legal system of another country or "legal groups" in many countries. Which of the following are legally transferred? ['China\'s Criminal Procedure Law Absorbed the "Different and Differential Investigation" System in the Song Dynasty.', 'German Civil Law\'s Inheritance and Development of the "Contractual Relationship" in the Civil Law Thought of the Country.', "Japanese Civil Law's Adoption of Certain Excellent Institutional Models in German Civil Law.", 'The "Judicial Aid" System Adopted by Mainland China Based on Its National Conditions.']