被告人当庭翻供，公诉人如何应对？

Core Viewpoint - The trial of a major drug trafficking case involving defendants Tang, Zhang, and Chen is being held in Chengdu, with significant evidence presented by the prosecution to establish their involvement in the crime [3][4]. Group 1: Case Details - The defendants are accused of transporting 4,000 grams of ice methamphetamine from Chengdu to Nanning, with subsequent sales and possession of additional drugs [3]. - Evidence includes phone records showing frequent communication between Tang and another defendant, indicating coordination in drug transportation [2][3]. - The prosecution highlights the complexity of the case, noting the challenges in gathering evidence and the defendants' attempts to deny involvement [4]. Group 2: Prosecution's Performance - The prosecution effectively countered the defendants' claims, demonstrating a clear understanding of the legal framework and presenting a well-structured argument [4][7]. - Observers praised the prosecution's thorough preparation and ability to address the defendants' defenses with timely and relevant evidence [6][7]. - The trial lasted five hours, reflecting the case's complexity and the depth of the evidence presented [5][6]. Group 3: Observations and Recommendations - Observers noted the trial's orderly conduct and the prosecution's adept handling of the proceedings, suggesting areas for improvement in questioning techniques [8]. - Suggestions included converting open-ended questions to closed ones during cross-examination and ensuring the timely documentation of evidence related to coded language used by the defendants [8]. - The prosecutor expressed a commitment to applying feedback from the evaluation group to enhance future courtroom performance [8].