1. In front of foreigners, use Mandarin.

You can't ask others to understand dialects because of your own habits. If you still use dialects in front of foreigners, it may cause unnecessary embarrassment. As long as you are sincere and slow down, you can communicate effectively if you are not good at Mandarin.

2. Hanging up the phone also pays attention to seniority.

the younger generation calls the elder, and the elder hangs up first; When the teacher calls his classmates, the teacher hangs up first; The subordinate calls the superior, and the superior hangs up first; If you are a peer, you'd better be called to hang up first.

3. Pay attention to the size when pouring water into the end cup.

The hand holding the cup should not hold the cup mouth. The height of the hand should be 2/3 of the whole cup and 1/3 away from the cup mouth, so as to leave enough space for the guests to drink water.

4. Don't spit everywhere.

if you cough up phlegm, you'd better wrap it in a paper towel or handkerchief and throw it into the trash can, or take it with you and clean it afterwards.

5. When you have a cold or cough, lower your head to avoid others, and cover your face with a handkerchief or paper towel.

This is to avoid splashing droplets, but don't cover your mouth and nose with your hands, otherwise the bacteria and viruses ejected with the airflow will be pushed back and enter the ear canal to damage the eardrum, which may even lead to otitis media and meningitis.

Shenkai Source: People's Daily Online-What Cough Etiquette Should I Know? Do this in daily life

People's Daily Online-Chinese etiquette professor is the first person to teach you daily etiquette.