1, normal name, no other meaning, just like you call a stranger big brother. Some women are very good at dealing with people. They are naturally familiar with each other. Men you just met can call "Brother Zhang" and "Li Ge". If she often calls you "surname+brother", you don't have to think about it. She is not only like you, but also a habit of hers.

2. It's boring for you. Calling you brother means that we are brother and sister, and there is no other idea. Of course, for a woman, "brother" can give her protection and a sense of security. If you have a good relationship, she often calls you this on WeChat, which shows that although your relationship can't go on, she already regards you as one of her own and trusts you.

3. I am interested in you, call you brother, feel close to you, and want to continue to develop. For a woman, everyone wants to have an "Ouba" like the hero of a Korean drama. When she has a crush on you, but she is not sure about your mind, first use the name "brother" to close the distance with you, so that it is convenient to have a closer relationship when she enters the ambiguous stage.