Certain symptoms of burning chamber may occur in the elderly at the time of death, but burning chamber is not a precursor of death or a premonitory symptom of death. If an elderly person is in poor physical condition, such as upper gastrointestinal bleeding, acute cirrhosis of the liver, ruptured esophagogastric fundic veins, varices, gastroesophageal reflux, or digestive system tumors, he or she may experience symptoms before death. In this case, there will be acid reflux and heartburn due to excessive secretion of digestive system, such as gastric acid, before death, so the symptoms of burning chamber will be self-reported. However, in addition to patients with the above conditions, other patients who have symptoms of burning chamber, such as precursors of peptic ulcer, upper gastrointestinal bleeding or acute coronary syndrome, may also have clinical symptoms of self-reported burning chamber, so burning chamber is not one of the precursors of dying.