He introduced his illness and kept burping. It looked a little funny, but they could see from his look that this man was in considerable pain.

One would feel very comfortable if he burped occasionally and could also accept it if he burped twice in a short time. However, if he kept burping and could not even stop while sleeping at night, he would be in extreme pain.

After the middle-aged man finished his words, Rooney asked again, "Mr. Zhang, have you ever turned to ...