去年以来，检察机关针对毒品案件纠正遗漏同案犯1900余人

Group 1 - The core viewpoint of the news is that the Supreme People's Procuratorate is intensifying efforts to combat drug-related crimes through comprehensive supervision and intervention in legal proceedings [1][2] - From January 2024 to May 2025, over 3,300 major drug crime cases were intervened by procuratorial authorities nationwide, with more than 1,600 cases supervised for filing [1] - The procuratorial authorities corrected over 1,000 cases of missed arrests, including more than 250 individuals sentenced to over ten years or life imprisonment [1] Group 2 - The procuratorial authorities also utilized various supervisory methods such as appeals and corrective opinions to address issues of improper sentencing and serious procedural violations in drug cases [2] - During the same period, over 450 appeals and retrials were filed against drug cases, resulting in more than 230 cases being overturned and increased penalties for over 110 individuals [2] - A specific case in Hunan highlighted the correction of a sentencing error where the original sentence for drug trafficking was significantly increased from 18 months to 15 years due to the oversight of evidence [2]