Mother: My son, have you packed your luggage?
Son: Yes. Be assured, mom.
Mother: Did you bring stomach medicine? You have a weak stomach. Don’t forget to take medicine while suffering from a stomachache.
Son: I’ve put them in my suitcase.
Mother: Did you bring cold medicine? How about anti-inflammatory drug? And don’t forget the band-aid. Check them again.
Son: Mom, I’m just going to Beijing to study. I’m not opening a drug store.