When you say "Qin", you mean "big". When you use it alone, you usually say "Qin Bu". For example, Renqin's benevolence refers to value, Qin is big, and together it refers to things of great value, that is, jewelry, and so on. For example, the wisdom in Qin (because the expression is not very accurate) should mean kindness, and Qin is still big. Together, it means mercy, which is generally used to describe parents and teachers.