雷军宣布：小米3nm芯片量产！

Group 1 - The core viewpoint of the article is that Xiaomi's self-developed 3nm flagship chip, Xiaomi Xuanjie O1, has begun mass production [1] - Two flagship products featuring the Xiaomi Xuanjie O1 chip will be launched: the high-end flagship smartphone Xiaomi 15s Pro and the ultra-high-end OLED tablet Xiaomi Pad 7 Ultra [1]