This clinical study was a prospective, single-center, single-arm exploratory study. Subjects who meet the inclusion criteria will be enrolled in this study, where surgeons will perform 5G remote gastrectomy on subjects using the Toumai endoscopic surgery system, and explore and evaluate the safety and efficacy of this clinical application.

Inclusion Criteria:

1. 18 years old ≤ actual age ≤80 years old.
2. Patients requiring gastrointestinal endoscopic surgery.
3. Willing to cooperate with and complete the study follow-up and related examinations.
4. Voluntarily participate in the study and sign the informed consent in person.

Exclusion Criteria:

1. Have serious cardiovascular or circulatory disease and cannot tolerate surgery.
2. Participated in other clinical trials within the last 3 months.
3. Inability to understand trial requirements, or inability to complete the study follow-up plan.
4. Researchers believe that there are other circumstances that are not suitable for inclusion.