I find it crazy how many people are surprised by this label and even more how many people try to ridicule it or dismiss it by saying "why don't you just call it

I find it crazy how many people are surprised by this label and even more how many people try to ridicule it or dismiss it by saying "why don't you just call it blah...", etc. It's a cultural norm, and it isn't just a Chinese/Mandarin thing, this exists in many other cultures. In India they also have very different words for different relatives and it has long traditional reasons because historically it was (and even still is today) very important to keep good relationships with a big family network because quite frankly in many places life depends on it. For example, if you have a sister and she gets married then you'd address your sister's husband's brother differently than if you also have a married brother. You wouldn't use the same word for your brother's wife's brother. Why? Well traditionally (and still today) if a women gets married then she leaves her family home and moves in with her in-laws. At that point she leaves one family and becomes the "daughter" of another family. She'll be living alongside her husband's siblings and his parents. As a brother you will address them differently and with respect because you want them to be good to your sister and because you are thankful that they are taking care of her now. People should educate themselves more before making stupid comments because it really just shows their complete lack of worldliness, education, ignorance and arrogance. Not attributes which gain you a lot of respect in the world IMHO.