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Core Viewpoint - GAC Group's Xingyuan range extender technology addresses common pain points in electric vehicles, specifically noise, acceleration, and fuel consumption, through innovative engineering solutions [1] Group 1: Noise Reduction - The integration of the engine and generator using a "crankshaft direct connection" significantly reduces noise levels, addressing the common complaint of loud operation in range extender vehicles [1] - The vibration during engine start-stop has been reduced by over 70%, leading to a nearly imperceptible driving experience for users [1] Group 2: Technical Innovation - The elimination of intermediate damping in the connection between the motor rotor and the engine crankshaft enhances the overall efficiency and performance of the vehicle [1] - Comprehensive vibration isolation measures have been implemented in the vehicle design to further minimize noise and vibration perception by the driver [1]