CGM for Insulin-Treated T2DM During Post-Discharge Transition

Inclusion Criteria: 1. Age 18 to 80 years (inclusive). 2. Confirmed diagnosis of type 2 diabetes mellitus (T2DM). 3. HbA1c between 8.0% and 13.0% (inclusive) within the last 1 month prior to screening/enrollment. 4. Planned to receive insulin therapy for at least 6 months after hospital discharge, as assessed/confirmed by the treating physician (principal physician). Exclusion Criteria: 1. Current use of a real-time continuous glucose monitoring (RT-CGM) device, or use within the 3 months prior to enrollment. 2. Severe skin disease at the sensor insertion site, or allergy to adhesive tape/adhesives. 3. Pregnant women; positive pregnancy test at screening; or planning pregnancy during the study period. 4. Currently participating in, or planning to participate in, another clinical trial. 5. Current use of oral corticosteroid therapy, or anticipated use during the trial period. 6. Severe liver disease, defined as alanine aminotransferase (ALT) or aspartate aminotransferase (AST) \>3 times the upper limit of normal (ULN). 7. Severe renal impairment or end-stage renal disease, defined as estimated glomerular filtration rate (eGFR) \<30 mL/min/1.73 m². 8. Any condition that, in the investigator's opinion, makes the participant unsuitable for the trial, for example: history of ocular trauma or other diagnosed eye diseases causing visual impairment; unwillingness to participate or inability to adequately understand/comply due to speech/language impairment; or presence of psychiatric disorders.