The online vocabulary mm means "sister" or "girl", which is the acronym taken from these two words. The abbreviation of this word first appeared on BBS. At that time, due to the extremely limited storage space and network transmission bandwidth of computers, many abbreviations of Chinese phrases appeared. At that time, even the posts were published with punctuation marks of half angle as far as possible to save space.

The network language nn means grandma, and it is also the first letter of grandma's pinyin.

Network language has two meanings:

First of all, it refers to terms and vocabulary related to Internet and computer technology and applications.

The second is the language people use to communicate and express themselves through computer network media. ?

Network language is a new language form which is different from traditional print media with the development of network. As soon as it was born, it was loved by netizens and developed rapidly.