直击雷军发布3nm旗舰芯片！现场安检空前严格，连白纸都要寄存！

Core Points - Xiaomi officially launched its self-developed 3nm flagship chip, the Xuanjie O1, on May 22 [1] - The security measures at the launch event were exceptionally strict, requiring attendees to undergo multiple verification steps [1] Group 1 - The launch of the Xuanjie O1 marks a significant advancement in Xiaomi's chip development capabilities [1] - Attendees faced lengthy entry procedures, with some taking nearly half an hour to gain access to the venue [1] - The security protocols included restrictions on bringing in various items, such as food and even plain paper [1]