Quote Originally Posted by Wondergirl View Post
Hi Dear,

I think these are some examples:
1. speaker phone is not made for public use.
2. don't be late for anything
3.cover your mouth coughing and sneezing.
4. use thank you/ sorry/ excuse(required)
5. Don't make a fun someone's laugh
You're right,The above things are unwritten but should follow rules in our society. Thanks for sharing wondergirl.