雷军：小米Yu7的防晒隔热是新能源汽车最好之一，欢迎大家比

Group 1 - The core message of the article highlights that Lei Jun, during his first live broadcast of 2026, emphasized that the Xiaomi Yu7 has one of the best sun protection and heat insulation features among electric vehicles, inviting comparisons [1][2]. Group 2 - The live broadcast took place on the evening of January 3, where Lei Jun made the announcement regarding the Xiaomi Yu7 [1][2].