There are two possibilities: 1. The most common may be esophageal or gastric disease. Some patients may have gastroesophageal reflux, and if they do not stand or walk after eating, but are in a recumbent position, so that food can reflux from the stomach to the esophagus causing discomfort in the cardiac fossa area, often with acid reflux and hiccups. There are also some patients who may have their own chronic gastritis or esophagitis and may also have the above symptoms.2. It may be that the patient has myocardial ischemia, and often the lower wall myocardial ischemia may be accompanied by gastrointestinal symptoms, and the patient may show symptoms such as nausea, discomfort in the stomach area, hiccups, belching, etc. This requires immediate consultation for a clear diagnosis and timely treatment.