凌晨，发射圆满成功！

Core Viewpoint - The successful launch of the Fengyun-4 03 satellite using the Long March 3B rocket marks a significant achievement in China's space capabilities, demonstrating the reliability of the Long March series of rockets [2][4][5] Group 1 - The launch occurred on December 27 at 0:07, from the Xichang Satellite Launch Center [2][4][5] - The Fengyun-4 03 satellite successfully entered its designated orbit, indicating a successful mission [2][4][5] - This mission represents the 621st flight of the Long March series of launch vehicles, highlighting the extensive experience and operational history of this rocket family [2][4][5]