Why is there a line of fine print under the WeChat message?

Because the other party used the "reference" function.

Wechat "quotation" is a new practical function. When you hold down in a chat, you can quote other people's messages. This function can help people to omit many operation steps, and it is very convenient to use without typing back.

Sometimes people send important messages, but they don't reply in time. When they find dozens or hundreds of messages, but want to quote this important message, they can choose "quote", and WeChat will automatically typeset it so that others can see it.

Extended data:

Refer to the usage scenario of reply function.

In the WeChat group, users missed the messages of users who sent messages before, and at least a third user had already sent messages. Different from QQ group, which tends to be entertaining, WeChat group is more inclined to socialize with acquaintances and strong relationships, which are more inclined to groups with strong functional attributes such as work groups (superiors and subordinates, colleagues) and family groups.

When users use the quote reply function, they tell the respondents that I just don't pay attention to the news, which is not conducive to maintaining strong relationships and social intimacy of acquaintances.