It is potentially dangerous to use one pair of chopsticks for hot pot. The same pair of chopsticks which has been used to pick up raw food may contaminate the cooked food with bacteria and parasites. The safest way is to prepare a separate pair of chopsticks for raw food. Besides, many kinds of food for hot-pot are frozen food and should be defrosted completely beforehand. Otherwise, the core will remain raw while the surface is done.
Undercooked food is neither tasteful nor healthy for eating.
Those who eat it will develop abdominal pain and diarrhoea. To store leftover cooked rice, remember to put it into the refrigerator right after it has cooled off and reheat it thoroughly before eating.