I. Introduction
Small intestine disease is an ever-increasing clinical problem threatening people’s health since more people adopt unhealthy lifestyle habits [1], [2]. The small intestine is located in the middle of the digestive tract, close to 7 m long and far away from the mouth and anus, so it is difficult to observe and diagnose [3]. However, with the advancement of endoscopy equipment and technology, significant progress has been made in diagnosing and treating small intestine diseases.