First, a name is better than no name.
If you don't talk when you ask others something, people will think you are rude. In life, we-we often see such examples, addressing others? Hello? . In fact, this way of asking is very impolite. We should also avoid this kind of inquiry in our life. We can use big brother, big sister, uncle, aunt and so on. Use appropriate names according to the age of the interviewee. Or when asking others, add it at the beginning of the sentence? Hello? Or? Hello? These two words.
Second, big sister is a common name.
The name "big sister" is really common in life. In various shopping malls, roadsides or streets, we can use this name to ask questions to some older women. There is nothing wrong with the title itself, but when we ask others, it can bring us closer to the feelings of the interviewee and make the inquiry less embarrassing. Besides big sister, big brother is also a very common address, which is used to address men older than themselves. These appellations are very common. What we need to pay attention to is that when asking others, we must be polite and have a title.