Sang is similar to the word "Xiao" in Chinese semantics, such as Xiao Wang, Xiao Li and Xiao Zhang, and is added after the surname. There is no distinction between men and women. Jun refers to a boy, which is a kind of honorific title for men.

Second, the usage is different.

Junduo is used to address younger friends or older close friends. Sang is a common courtesy title for colleagues, classmates, etc. Address the superior, either add the surname to the position or directly address the position.

Third, the scope of application is different

Mulberry has the widest scope of application, which is common to both men and women, and is common to both upper and lower levels. Jun must never be used backwards like Sang, and pronouns such as suffix status and rank are generally not used in translation.

Mulberry is a more formal polite title, which is the most widely used. All relationships can be called mulberries, but familiar people will have a sense of distance.