Without waiting for Xia Wan to reply, the old lady continued, "Two days ago, my old man saw someone on the street giving him free treatment. He immediately let him have a checkup. After the checkup, he asked my old man to buy three boxes of medicine. My kid went to the hospital for a checkup, but the doctor said that these weren't medicine at all. It was useless even if he took it. We quarreled many times over this matter. Little girl, don't lie to me."
After hearing her words, Xia Wan realized that what the old lady was talking about might be a trick used by those who turned so-called harmless things into miraculous medicine to deceive the elderly.