Police officers patrol past visitors seeking information at a special exhibition of legal services during the China International Fair for Trade in Services (CIFTIS) at the Shougang venue in Beijing on Sept. 1, 2022. One of the world's biggest law firms said Thursday, Aug. 10, 2023 it is separating from the Chinese firm that was part of its global network for eight years, citing changes in cybersecurity and other rules that have rattled foreign companies. (AP Photo/Andy Wong)