Group 1 - Xiaomi officially launched its self-developed chips, the Xuanjie O1 and Xuanjie T1, along with at least three mass-produced products based on these chips during its 15th anniversary event in late May 2025 [1] - The Xiaomi 15S Pro, equipped with the full-version Xuanjie O1 chip, has garnered significant attention due to its use of TSMC's flagship 3nm process and the latest ARM architecture [3] - The article also discusses the historical context of the Lenovo O1, which was released 16 years prior and represented a significant moment in the domestic smartphone industry, contrasting its fate with that of the Xuanjie O1 [5][6] Group 2 - The term "OPhone" refers to a derivative operating system developed by China Mobile in collaboration with various domestic companies, based on Android, and was first introduced in August 2009 [8][10] - Lenovo's O1 was the first product under the OPhone brand, which was highly anticipated as a flagship domestic smartphone, showcasing significant investment in the domestic operating system [11][13] - The Lenovo MIRO O1 featured competitive hardware for its time, including a 3.5-inch HVGA touchscreen and a Marvell PXA processor with a frequency of 624MHz, outperforming contemporaneous models [15][19] Group 3 - The OPhone OS 1.0, developed based on Android 1.0, included numerous modifications and was designed to integrate various services promoted by China Mobile, such as Feixin and CMMB mobile TV [26][29] - Despite its initial promise, the OPhone OS ultimately failed due to its inability to keep pace with rapid technological advancements in the smartphone industry, particularly in comparison to Google's Android updates [36][40] - The OPhone's decline was attributed to a focus on interface refinement at the expense of core system updates, leading to a significant lag behind Android's development [34][57]