Traditional Culture Encyclopedia - Hotel accommodation - Why are friends who collect coins called "all friends"? What are the allusions?

Why are friends who collect coins called "all friends"? What are the allusions?

The significance of naming coins "Quan" earlier is to symbolize the spring-like circulation in all directions (the name of "Huoquan" in Han Dynasty vividly describes the function of money), so calling coin collectors "Quan Jia" and "Quan You" also reflects the collection characteristics of coin culture and humanistic culture.