Group 1 - The head of material technology at Li Auto, Ji Chaochao, responded to concerns about the repairability of integrated die-casting structures, stating that these structures are designed with multiple layers of protection during collisions [1] - In low-speed collisions, typically only the crash beam may be damaged, which can be easily replaced, while higher energy collisions may damage the energy-absorbing box and longitudinal beams, which can also be replaced as a whole [1] - The design of integrated die-casting structures aims to efficiently absorb energy within an appropriate deformation range, and the claim that minor collisions would necessitate a complete vehicle replacement is unfounded [1] Group 2 - International car manufacturers, such as Volvo with its EX90 model, are utilizing integrated die-casting technology, indicating a growing acceptance of this method in the industry [2] - The primary reason for not using integrated die-casting in many domestic vehicles is cost rather than repairability, with lower-cost vehicles typically opting for steel bodies due to their affordability [2] - Some domestic brands in the price range of 200,000 to 400,000 yuan also avoid integrated die-casting, which reflects a "hidden cost advantage" in their manufacturing choices [2]