Lei Jun provided an in-depth explanation of Xiaomi's automotive testing framework, with a particular focus on the rigorous 'Three Highs' testing regimen. This framework meticulously covers the entire lifecycle of a vehicle and is bifurcated into two primary phases: pre-mass-production and post-mass-production.

The pre-mass-production testing phase is geared towards validating the design blueprint and ensuring seamless production processes. It encompasses a blend of laboratory-based and outdoor testing methodologies. Prior to the commencement of mass production, both the Xiaomi SU7 and YU7 models underwent extensive road testing. Notably, the YU7 also underwent specialized plateau road tests to assess its performance in high-altitude conditions.

Conversely, the post-mass-production testing phase is designed to uncover any issues that may emerge during prolonged usage. This is achieved through simulated real-world scenario testing, which facilitates iterative optimization of the vehicle. The ongoing plateau tests for the YU7 are a prime example of this phase in action. Xiaomi Automobile has already meticulously designed and tested the YU7 for plateau environments. Looking ahead, the company remains committed to conducting further extreme environment testing and expanding the scope of its testing initiatives.