Abdominal discomfort caused by indigestion, long-term irregular diet, love of irritating food, or overeating. Please determine which of the following is not a manifestation of indigestion? ["Zhao Liang is the company manager. He often has to accompany customers to eat at eight or nine in the evening. Every time I get home, it's too late. I can't sleep when I swell in my bed, which affects my sleep.", 'Xiao Zhang is a white-collar employee of an IT company. He usually works very nervous, stays up late, eats very irregularly, is hungry before going to bed at midnight, and eats high-calorie fast food.', "Gao Yang, who especially loves Sichuan spicy hot pot, hasn't come to work in recent days. When my colleagues asked about it, Gao Yang met with friends a few days ago, ate a lot of peppers, and experienced severe pain in the stomach. Now he is resting in the hospital.", 'Lao Zhou has always been accustomed to drinking strong tea and smoking, and sometimes his stomach has acid reflux.']